<SEC-DOCUMENT>0001026608-13-000099.txt : 20130814
<SEC-HEADER>0001026608-13-000099.hdr.sgml : 20130814
<ACCEPTANCE-DATETIME>20130814175254
ACCESSION NUMBER:		0001026608-13-000099
CONFORMED SUBMISSION TYPE:	S-8
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20130814
DATE AS OF CHANGE:		20130814
EFFECTIVENESS DATE:		20130814

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ACME UNITED CORP
		CENTRAL INDEX KEY:			0000002098
		STANDARD INDUSTRIAL CLASSIFICATION:	CUTLERY, HANDTOOLS & GENERAL HARDWARE [3420]
		IRS NUMBER:				060236700
		STATE OF INCORPORATION:			CT
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-8
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-190623
		FILM NUMBER:		131039177

	BUSINESS ADDRESS:	
		STREET 1:		60 ROUND HILL ROAD
		CITY:			FAIRFIELD
		STATE:			CT
		ZIP:			06824
		BUSINESS PHONE:		203-254-6060

	MAIL ADDRESS:	
		STREET 1:		60 ROUND HILL ROAD
		CITY:			FAIRFIELD
		STATE:			CT
		ZIP:			06824

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ACME SHEAR CO
		DATE OF NAME CHANGE:	19710713
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-8
<SEQUENCE>1
<FILENAME>acu_s8082013.htm
<DESCRIPTION>S-8
<TEXT>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">As filed with the Securities and Exchange Commission <FONT STYLE="background-color: White">on
August 14, 2013</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 47.95pt; text-align: right">Registration No. 333-______</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">UNITED STATES</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">SECURITIES AND EXCHANGE COMMISSION</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">Washington, DC 20549</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">------------------------------------</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">FORM S-8</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">Registration Statement</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">Under the Securities Act of 1933</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">------------------------------------</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">Acme United Corporation</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">(Exact name of Registrant as specified in
its charter)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 10pt Times New Roman, Times, Serif; width: 100%">
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    <TD STYLE="width: 50%; text-align: center; vertical-align: bottom">Connecticut</TD>
    <TD STYLE="width: 50%; text-align: center; vertical-align: top">06-0236700</TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD STYLE="text-align: center; vertical-align: top">(State or other jurisdiction of</TD>
    <TD STYLE="text-align: center; vertical-align: top">(I.R.S. Employer</TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD STYLE="text-align: center; vertical-align: top">incorporation or organization)</TD>
    <TD STYLE="text-align: center; vertical-align: top">Identification
Number)</TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center"> </P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center"> </P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center"> </P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">60 Round Hill Road</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">Fairfield, Connecticut 06824</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">(Address
of principal executive offices, including zip code)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">Acme United Corporation 2012 Employee
Stock Option Plan</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">(Full Title of the Plan)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">-----------------</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">Paul Driscoll</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">Vice President, Chief Financial Officer,</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">Secretary and Treasurer</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">60 Round Hill Road</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">Fairfield, Connecticut 06824</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">(Name and address of agent for service</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">(203) 254-6060</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">(Telephone number, including area code, of
agent for service)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">copy to:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">Merritt A. Cole, Esq.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">White and Williams LLP</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">1650 Market Street Suite 1800</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">Philadelphia, Pennsylvania 19103-7395</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">Phone (215) 864-7000</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">Fax (215) 789-7589</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">-----------------</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Indicate by check mark whether the Registrant is a large accelerated
filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See definitions of &ldquo;large accelerated
filer&rdquo;, &ldquo;accelerated filer&rdquo; and &ldquo;smaller reporting company in Rule&nbsp;12b-2 of the Exchange Act.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0pt"><FONT STYLE="color: black">Large accelerated filer [_]&nbsp;&nbsp;&nbsp;&nbsp;Accelerated
filer [_]&nbsp;&nbsp;&nbsp;&nbsp; Non-accelerated filer [_] &nbsp;&nbsp;&nbsp;Smaller Reporting Company </FONT>[X]</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

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    <TD COLSPAN="16" STYLE="text-align: center; vertical-align: bottom; border-bottom: Black 1pt solid">CALCULATION OF REGISTRATION FEE</TD><TD STYLE="text-align: center; vertical-align: bottom">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: center; vertical-align: bottom">&nbsp;</TD><TD STYLE="text-align: center; vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="text-align: center; vertical-align: bottom">&nbsp;</TD><TD STYLE="text-align: center; vertical-align: bottom">&nbsp;</TD><TD STYLE="text-align: center; vertical-align: bottom">&nbsp;</TD>
    <TD>&nbsp;</TD><TD STYLE="text-align: center; vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="text-align: center; vertical-align: bottom">&nbsp;</TD><TD STYLE="text-align: center; vertical-align: bottom">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center; vertical-align: bottom">&nbsp;</TD><TD STYLE="text-align: center; vertical-align: bottom">&nbsp;</TD><TD STYLE="text-align: center; vertical-align: bottom">&nbsp;</TD><TD STYLE="text-align: center; vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="text-align: center; vertical-align: bottom">&nbsp;</TD><TD STYLE="text-align: center; vertical-align: bottom">&nbsp;</TD><TD STYLE="text-align: center; vertical-align: bottom">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: center; vertical-align: bottom; border-bottom: Black 1pt solid">Title of securities to be registered</TD><TD STYLE="text-align: center; vertical-align: bottom; border-bottom: Black 1pt solid">&nbsp;</TD>
    <TD STYLE="text-align: center; vertical-align: bottom; border-bottom: Black 1pt solid">&nbsp;</TD><TD COLSPAN="2" STYLE="text-align: center; vertical-align: bottom; border-bottom: Black 1pt solid">Amount to be registered (1)</TD>
    <TD STYLE="border-bottom: Black 1pt solid">&nbsp;</TD><TD STYLE="text-align: center; vertical-align: bottom; border-bottom: Black 1pt solid">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="text-align: center; vertical-align: bottom; border-bottom: Black 1pt solid">Proposed maximum offering price per share</TD>
    <TD STYLE="border-bottom: Black 1pt solid">&nbsp;</TD>
    <TD STYLE="text-align: center; vertical-align: bottom; border-bottom: Black 1pt solid">&nbsp;</TD><TD STYLE="text-align: center; vertical-align: bottom; border-bottom: Black 1pt solid">Proposed maximum aggregate offering price</TD><TD STYLE="text-align: center; vertical-align: bottom; border-bottom: Black 1pt solid">&nbsp;</TD><TD STYLE="text-align: center; vertical-align: bottom; border-bottom: Black 1pt solid">&nbsp;</TD>
    <TD STYLE="text-align: center; vertical-align: bottom; border-bottom: Black 1pt solid">&nbsp;</TD><TD STYLE="text-align: center; vertical-align: bottom; border-bottom: Black 1pt solid">Amount of registration fee</TD><TD STYLE="text-align: center; vertical-align: bottom">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left"></TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right"></TD><TD STYLE="text-align: left">&nbsp;</TD>
    <TD>&nbsp;</TD><TD>&nbsp;</TD>
    <TD></TD><TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right"></TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right"></TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="width: 22%; text-align: left">Common Stock</TD><TD STYLE="width: 1%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 13%; text-align: right">152,500 </TD><TD STYLE="width: 3%; text-align: left">&nbsp;(2)</TD>
    <TD STYLE="width: 3%">&nbsp;</TD><TD STYLE="width: 2%">$</TD>
    <TD STYLE="width: 13%; text-align: right; vertical-align: bottom">13.75 </TD><TD STYLE="width: 3%">&nbsp;(3)</TD>
    <TD STYLE="width: 3%">&nbsp;</TD>
    <TD STYLE="width: 2%; text-align: left">$</TD><TD STYLE="width: 13%; text-align: right">2,096,875</TD><TD STYLE="width: 3%; text-align: left">&nbsp;</TD><TD STYLE="width: 1%">&nbsp;</TD>
    <TD STYLE="width: 3%; text-align: left">&nbsp;</TD><TD STYLE="width: 13%; text-align: right">&nbsp;</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="padding-bottom: 1pt">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="text-align: left; padding-bottom: 1pt">&nbsp;</TD><TD STYLE="text-align: right; border-bottom: Black 1pt solid">17,500</TD><TD STYLE="text-align: left; border-bottom: Black 1pt solid">&nbsp;(4)</TD>
    <TD STYLE="padding-bottom: 1pt">&nbsp;</TD><TD>$</TD>
    <TD STYLE="text-align: right; vertical-align: bottom">13.88 </TD><TD>&nbsp;(5)</TD>
    <TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="text-align: left; border-bottom: Black 1pt solid">&nbsp;</TD><TD STYLE="text-align: right; border-bottom: Black 1pt solid">242,900</TD><TD STYLE="text-align: left; padding-bottom: 1pt">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left; padding-bottom: 1pt">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD>Total</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">170,000</TD><TD STYLE="text-align: left">&nbsp;</TD>
    <TD>&nbsp;</TD><TD>&nbsp;</TD>
    <TD>&nbsp;</TD><TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: left">$</TD><TD STYLE="text-align: right">2,339,775</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">$</TD><TD STYLE="text-align: right">319.15</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="border-bottom: Black 1pt solid">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid">&nbsp;</TD>
    <TD STYLE="text-align: left; border-bottom: Black 1pt solid">&nbsp;</TD><TD STYLE="text-align: right; border-bottom: Black 1pt solid">&nbsp;</TD><TD STYLE="text-align: left; border-bottom: Black 1pt solid">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid">&nbsp;</TD>
    <TD STYLE="text-align: left; border-bottom: Black 1pt solid">&nbsp;</TD><TD STYLE="text-align: right; border-bottom: Black 1pt solid">&nbsp;</TD><TD STYLE="text-align: left; border-bottom: Black 1pt solid">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid">&nbsp;</TD>
    <TD STYLE="text-align: left; border-bottom: Black 1pt solid">&nbsp;</TD><TD STYLE="text-align: right; border-bottom: Black 1pt solid">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
</TABLE>


<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"></P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Courier New, Courier, Monospace; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 25pt; text-align: left"><FONT STYLE="font: 10pt Times New Roman, Times, Serif">(1)</FONT></TD><TD STYLE="width: 5pt"></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif">Pursuant to Rule 416 under
the Securities Act of 1933 (the &ldquo;Securities Act&rdquo;), this Registration Statement covers, in addition to the number of
shares stated herein, an indeterminate amount of additional shares of the Company&rsquo;s common stock , par value $2.50 per share
(the &ldquo;Common Stock&rdquo;), that may become issuable pursuant to the anti-dilution or other adjustment provisions of the
the Acme United Corporation 2012 Employee Stock Option Plan (&ldquo;2012 Employee Plan&rdquo;), as amended (the &ldquo;Plan&rdquo;).</FONT></TD>
</TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0pt; text-indent: 0in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 25pt; text-align: left">(2)</TD><TD STYLE="width: 5pt"></TD><TD STYLE="text-align: justify">Represents shares of Common Stock issuable upon exercise of options granted in July
2013 under the Plan.</TD>
</TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0pt; text-indent: 0in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 25pt; text-align: left">(3)</TD><TD STYLE="width: 5pt"></TD><TD STYLE="text-align: justify">Exercise price of options granted in July 2013.</TD>
</TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0pt; text-indent: 0in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 25pt; text-align: left">(4)</TD><TD STYLE="width: 5pt"></TD><TD STYLE="text-align: justify">Represents additional shares of the Common Stock issuable upon exercise of options
which may be granted after the date hereof under the Plan.</TD>
</TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0pt; text-indent: 0in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 25pt; text-align: left">(5)</TD><TD STYLE="width: 5pt"></TD><TD STYLE="text-align: justify">Estimated pursuant to Rules 457 (c) and 457 (h)(1) under the Securities Act, solely
for the purpose of calculating the registration fee, based upon the average of the high and low prices for shares of the common
stock reported on the NYSE MKT on August 12, 2013.</TD>
</TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>Explanatory Note.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">The Company is filing this Registration Statement on Form S-8 is
being filed for the purpose of registering:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">(i) &nbsp;&nbsp;an additional 170,000 shares of Common Stock, par value
$2.50 per share, of the Company (the &ldquo;Common Stock&rdquo;) which may be issued pursuant to the Acme United Corporation
2012 Employee Stock Option Plan, as amended effective April 22, 2013 (the &ldquo;Plan&rdquo;) and,</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">(ii) &nbsp;&nbsp;Pursuant to Rule 416 under the Securities Act of 1933,
as amended(the &ldquo;Securities Act&rdquo;), an indeterminate amount of additional shares of Common Stock, which may become
issuable pursuant to the anti-dilution or other adjustment provisions of the Plan.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">In accordance with Instruction E of the General Instruction to Form
S-8, the contents of the Registration Statement on Form S-8 (Reg. No. 33-182251) filed on August 16, 2012 by the Company with the
Securities and Exchange Commission (the &ldquo;Commission&rdquo;) relating to the Plan are incorporated by reference herein to
the extent not otherwise modified or superseded by this Registration Statement.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Part I</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">The documents containing the information specified in Part I of
Form S-8 will be sent or given to participants as specified by Rule 428(b)(1) promulgated under the Securities Act. Such documents
need not be filed with the Commission either as part of this Registration Statement or as prospectuses or prospectus supplements
pursuant to Rule 424. These documents and the documents incorporated herein by reference pursuant to Item 3 of Part II of this
Registration Statement, taken together, constitute a prospectus that meets the requirements of Section 10(a) of the Securities
Act (the &quot;Prospectus&quot;).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Part II</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Item 3. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Incorporation of Documents by Reference.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">The following documents previously filed with the Commission are
incorporated by reference and made a part of this prospectus:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 10pt Times New Roman, Times, Serif; width: 100%">
<TR STYLE="vertical-align: top; text-align: left">
    <TD>(a)</TD>
    <TD COLSPAN="2">our Annual Report on Form 10-K for the fiscal year ended December 31, 2012, filed on March 8, 2013;</TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD STYLE="width: 3%">&nbsp;</TD>
    <TD STYLE="width: 3%">&nbsp;</TD>
    <TD STYLE="width: 94%">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD>(b)</TD>
    <TD>(i)</TD>
    <TD>our Quarterly Reports on Form 10-Q for the quarters ended March 31, 2013 and June 30, 2013, filed on May 10, 2013 and August 13, 2013, respectively.</TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD>&nbsp;</TD>
    <TD>(ii)</TD>
    <TD>our Current Reports on Form 8-K filed on February 28, April 19, April 25, April 26 and July 19, 2013 (other than the portions of those documents not deemed to be filed; and</TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD>(c)</TD>
    <TD COLSPAN="2">the description of our Common Stock contained in our Current Report on Form 8-K filed on July 8, 2005, including any amendment to that form that we may file in the future, for the purpose of updating the description of our Common Stock.</TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"></P>

<P STYLE="text-align: left; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"> </P>



<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"></P>

<P STYLE="text-align: left; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"> </P>



<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">All documents that we file pursuant to Sections 13(a), 13(c),
14 and 15(d) of the Securities Exchange Act of 1934 (the &ldquo;Exchange Act&rdquo;)subsequent to the effective date of this Registration
Statement, prior to the filing of a post-effective amendment which indicates that all securities offered by this prospectus have
been sold or which deregisters all securities then remaining unsold, shall be deemed to be incorporated by reference in this prospectus
and to be a part of this prospectus from the date of filing of such documents. Any statement contained herein or in any document
incorporated or deemed to be incorporated by reference shall be deemed to be modified or superseded for purposes of this Registration
Statement to the extent that a statement contained in any other subsequently filed document which also is or is deemed to be incorporated
by reference modifies or supersedes such statement. Any such statement so modified or superseded shall not be deemed to constitute
a part of this Registration Statement, except as so modified or superseded.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Item 4. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Description of Securities.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Not applicable, because the Common Stock is registered under Section
12 of the Exchange Act.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Item 5. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Interest of Named Experts and Counsel.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">None.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Item 6. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Indemnification of Directors and Officers.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Connecticut General Statutes (&quot;CGS&quot;) Sections
33-770 through 33-779 provide for mandatory, permissive and court-ordered indemnification of directors who are parties to a
proceeding. For purposes of these indemnification statutes a &quot;proceeding&quot; is defined as any threatened, pending or
completed action, suit or proceeding, whether civil, criminal, administrative, arbitrative or investigative and whether
formal or informal.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">The Company's Restated Certificate of Incorporation provides
that the Company shall indemnify an individual who is a party to a proceeding because he is a director or officer of the
corporation against liability in the proceeding if:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">(1)(A) &nbsp;&nbsp;he conducted himself in good faith; (B) he
reasonably believed (i) in the case of conduct in his official capacity, that his conduct was in the best interests of the
corporation; and (ii) in all other cases, that his conduct was at least not opposed to the best interests of the corporation;
and (C) in the case of any criminal proceeding, he had no reasonable cause to believe his conduct was unlawful; or</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">(2) &nbsp;&nbsp;such liability arises from any action taken,
or any failure to take any action, as a director or officer, except liability that (A) involved a knowing and culpable
violation of law by the director or officer; (B) enabled the director, officer or an associate (as defined in the CGS) to
receive an improper personal gain; (C) showed a lack of good faith and a conscious disregard for the duty of the director or
officer to the corporation under circumstances in which the director or officer was aware that his conduct or omission
created an unjustifiable risk of serious injury to the corporation; (D) constituted a sustained and unexcused pattern of
inattention that amounted to an abdication of the director's or officer's duty to the corporation; or (E) created liability
under the CGS for the illegal payment of dividends.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">The Registrant has obtained directors' and officers' reimbursement
and liability insurance against certain liabilities.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Item 7. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Exemption from Registration Claimed.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Not Applicable.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Item 8. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Exhibits.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">The following exhibits are filed as part of this Registration Statement:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 10pt Times New Roman, Times, Serif; width: 100%">
<TR STYLE="vertical-align: top; text-align: left">
    <TD STYLE="width: 15%">&nbsp;Exhibit No.</TD>
    <TD STYLE="width: 2%">&nbsp;</TD>
    <TD STYLE="width: 83%">Identification of Exhibit</TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD>5.1</TD>
    <TD>&nbsp;</TD>
    <TD>Opinion of Brody Wilkinson PC</TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD>23.1</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: left; vertical-align: top">Consent
of Marcum LLP, independent registered public accounting firm</TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD>23.3</TD>
    <TD>&nbsp;</TD>
    <TD>Consent of Brody Wilkinson PC (included in Exhibit 5.1)</TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD>24.1</TD>
    <TD>&nbsp;</TD>
    <TD>Power of attorney (included on signature page of this Registration Statement)</TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD STYLE="border-bottom: Black 1pt solid">99.1*</TD>
    <TD>&nbsp;</TD>
    <TD>Acme United Corporation 2012 Employee Stock Option Plan, as
amended</TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"> </P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"> </P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">*&nbsp;&nbsp;Incorporated by reference to the Company&rsquo;s quarterly report
on Form 10-Q for the quarter ended June 30, 2012, filed on August 14, 2012, except that the number of shares authorized to be
issued under the Plan, as amended, pursuant to Section 3(a) shall be increased from 170,000 to 340,000 shares.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Item 9. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Undertakings</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">The undersigned Registrant hereby undertakes:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">(1) &nbsp;&nbsp;To file, during any period in which offers or sales are being
made, a post-effective amendment to this Registration Statement:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">(a) &nbsp;&nbsp;To include any prospectus required by Section 10(a)(3) of the
Securities Act;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">(b) &nbsp;&nbsp;To reflect in the prospectus any facts or events arising after
the effective date of this Registration Statement (or the most recent post-effective amendment thereof) which, individually or
in the aggregate, represent a fundamental change in the information set forth in this Registration Statement. Notwithstanding the
foregoing, any increase or decrease in volume of securities offered (if the total dollar value of securities offered would not
exceed that which was registered) and any deviation from the low or high end of the estimated maximum offering range may be reflected
in the form of a prospectus filed with the Commission pursuant to Rule 424(b) if, in the aggregate, the changes in volume and price
represent no more than a 20% change in the maximum aggregate offering price set forth in the &quot;Calculation of Registration
Fee&quot; table in the effective registration statement;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">(c) &nbsp;&nbsp;To include any material information with respect to the plan
of distribution not previously disclosed in this Registration Statement or any material change to such information in this Registration
Statement;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">provided, however, that paragraphs (1)(a) and (1)(b) do not apply
if the information required to be included in a post-effective amendment by those paragraphs is contained in reports filed with
or furnished to the Commission by the Registrant pursuant to Section 13 or Section 15(d) of the Exchange Act that are incorporated
by reference in this Registration Statement.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">(2) &nbsp;&nbsp;That, for the purpose of determining any liability under the
Securities Act, each such post-effective amendment shall be deemed to be a new Registration Statement relating to the securities
offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">(3) &nbsp;&nbsp;To remove from registration by means of a post-effective amendment
any of the securities being registered which remain unsold at the termination of the offering.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">(4) &nbsp;&nbsp;That, for the purposes of determining any liability under the
Securities Act, each filing of the Registrant's annual report pursuant to Section 13(a) or Section 15(d) of the Exchange Act (and,
where applicable, each filing of an employee benefit plan's annual report pursuant to Section 15(d) of the Exchange Act) that is
incorporated by reference in this Registration Statement shall be deemed to be a new registration statement relating to the securities
offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">(5) &nbsp;&nbsp;Insofar as indemnification for liabilities
arising under the Securities Act may be permitted to directors, officers and controlling persons of the Registrant pursuant
to the foregoing provisions, or otherwise, the Registrant has been advised that in the opinion of the Commission such
indemnification is against public policy as expressed in the Securities Act and is, therefore, unenforceable. In the event
that a claim for indemnification against such liabilities (other than the payment by the Registrant of expenses incurred or
paid by a director, officer or controlling person of the Registrant in the successful defense of any action, suit or
proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered,
the Registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a
court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in
the Securities Act and will be governed by the final adjudication of such issue.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"></P>




<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">SIGNATURES</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Pursuant to the requirements of the Securities Act of 1933, the
Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and
has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the Town
of Fairfield, State of Connecticut, <FONT STYLE="background-color: White">on the 14th</FONT> day of August, 2013.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 10pt Times New Roman, Times, Serif; width: 100%">
<TR STYLE="vertical-align: top; text-align: left">
    <TD>&nbsp;</TD>
    <TD COLSPAN="2">ACME UNITED CORPORATION</TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD STYLE="width: 45%">&nbsp;</TD>
    <TD STYLE="width: 5%">&nbsp;</TD>
    <TD STYLE="width: 50%">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD>&nbsp;</TD>
    <TD>By:</TD>
    <TD STYLE="border-bottom: Black 1pt solid">/s/ Walter C. Johnsen</TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>Walter C. Johnsen, Chairman of the Board, Chief Executive
Officer</TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 47.95pt"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature
appears below constitutes and appoints Walter C. Johnsen and Paul Driscoll, or either of them, as true and lawful attorneys-in-fact
and agents with full power of substitution and re-substitution, for him and in his name, place and stead, in any and all capacities
to sign the Registration Statement filed herewith and any or all amendments to said Registration Statement, and to file the same,
with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto
said attorney-in-fact and agents the full power and authority to do and perform each and every act and thing requisite and necessary
to be done in and about the foregoing, as to all intents and purposes as he or she might or could do in person, hereby ratifying
and confirming all that said attorney-in-fact and agents or any of them, or his substitute, may lawfully do or cause to be done
by virtue hereof.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed by the following persons in the capacities indicated below on the 14th day of August, 2013:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; background-color: white">
<TR>
    <TD STYLE="width: 40%"><FONT STYLE="font-size: 10pt">Signature</FONT></TD>
    <TD STYLE="width: 5%">&nbsp;</TD>
    <TD STYLE="width: 45%"><FONT STYLE="font-size: 10pt">Title</FONT></TD>
    <TD STYLE="width: 10%"><FONT STYLE="font-size: 10pt">Date</FONT></TD></TR>
<TR>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR>
    <TD><FONT STYLE="font-size: 10pt"><U>/s/ Walter C. Johnsen</U></FONT></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR>
    <TD STYLE="text-align: left; vertical-align: top"><FONT STYLE="font-size: 10pt">Walter C. Johnsen</FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">Chairman of the Board, Chief Executive Officer and Director</FONT></TD>
    <TD>&nbsp;</TD></TR>
<TR>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR>
    <TD><FONT STYLE="font-size: 10pt"><U>/s/ Brian S. Olschan</U></FONT></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR>
    <TD><FONT STYLE="font-size: 10pt">Brian S. Olschan</FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">President, Chief Operating Officer and Director</FONT></TD>
    <TD>&nbsp;</TD></TR>
<TR>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR>
    <TD><FONT STYLE="font-size: 10pt"><U>/s/ Paul Driscoll</U></FONT></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR>
    <TD STYLE="text-align: left; vertical-align: top"><FONT STYLE="font-size: 10pt">Paul Driscoll</FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">Vice President, Chief Financial Officer, Secretary and&nbsp;Treasurer</FONT></TD>
    <TD>&nbsp;</TD></TR>
<TR>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR>
    <TD><FONT STYLE="font-size: 10pt"><U>/s/ Rex L. Davidson</U></FONT></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR>
    <TD><FONT STYLE="font-size: 10pt">Rex L. Davidson</FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">Director</FONT></TD>
    <TD>&nbsp;</TD></TR>
<TR>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR>
    <TD><FONT STYLE="font-size: 10pt"><U>/s/ Richmond Y. Holden, Jr.</U></FONT></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR>
    <TD><FONT STYLE="font-size: 10pt">Richmond Y. Holden, Jr.</FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">Director</FONT></TD>
    <TD>&nbsp;</TD></TR>
<TR>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR>
    <TD><FONT STYLE="font-size: 10pt"><U>/s/ Susan H. Murphy</U></FONT></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR>
    <TD><FONT STYLE="font-size: 10pt">Susan H. Murphy</FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">Director</FONT></TD>
    <TD>&nbsp;</TD></TR>
<TR>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR>
    <TD><FONT STYLE="font-size: 10pt"><U>/s/ Stevenson E. Ward III</U></FONT></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR>
    <TD><FONT STYLE="font-size: 10pt">Stevenson E. Ward III</FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">Director</FONT></TD>
    <TD>&nbsp;</TD></TR>
</TABLE>


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; text-align: center; margin-bottom: 0"><U>Exhibit Index</U></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; text-align: center; margin-bottom: 0">&nbsp;</P>

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<TR STYLE="vertical-align: top; text-align: left">
    <TD STYLE="width: 15%">&nbsp;Exhibit No.</TD>
    <TD STYLE="width: 2%">&nbsp;</TD>
    <TD STYLE="width: 83%">Identification of Exhibit</TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD><A HREF="acu_s8082013ex51.htm">5.1</A></TD>
    <TD>&nbsp;</TD>
    <TD>Opinion of Brody Wilkinson PC</TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD><A HREF="acu_s8082013ex231.htm">23.1</A></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: left; vertical-align: top">Consent
of Marcum LLP, independent registered public</TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD>23.3</TD>
    <TD>&nbsp;</TD>
    <TD>Consent of Brody Wilkinson PC (included in Exhibit 5.1)</TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD>24.1</TD>
    <TD>&nbsp;</TD>
    <TD>Power of attorney (included on signature page of this Registration Statement)</TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD STYLE="border-bottom: Black 1pt solid">99.1*</TD>
    <TD>&nbsp;</TD>
    <TD>Acme United Corporation 2012 Employee Stock Option Plan, as
amended</TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"> </P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>


<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-indent: 0in">*&nbsp;&nbsp;Incorporated by reference to the Company&rsquo;s
quarterly report on Form 10-Q for the quarter ended June 30, 2012, filed on August 14, 2012, except that the number of shares authorized
to be issued under the Plan, as amended, pursuant to Section 3(a) shall be increased from 170,000 to 340,000 shares</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-indent: 0in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-indent: 0in">&nbsp;</P>

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    <TD STYLE="width: 100%; border-bottom: Black 1pt solid; text-align: center; vertical-align: bottom"><FONT STYLE="font: 8pt Times New Roman, Times, Serif">8</FONT></TD></TR>
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<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>acu_s8082013ex51.htm
<DESCRIPTION>EXHIBIT 5.1
<TEXT>
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<BODY STYLE="font: 10pt Times New Roman, Times, Serif">

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: right">Exhibit 5.1</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: right">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 4in">As of August 14, 2013</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">Board of Directors</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">Acme United Corporation</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">60 Round Hill Road</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">Fairfield, CT 06824</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-align: justify">Dear Sirs and Madam:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-indent: 0.5in">We are corporate general counsel for
Acme United Corporation (the &ldquo;Company&rdquo;). We are delivering this opinion in connection with the filing with the Securities
and Exchange Commission (the &ldquo;Commission&rdquo;) on or about the date hereof of a Form S-8 Registration Statement (the &ldquo;Registration
Statement&rdquo;) relating to shares of Common Stock, par value $2.50 per share, of the Company (the &ldquo;Shares&rdquo;) to be
offered as follows: 170,000 Shares pursuant to the Acme United Corporation 2012 Employee Stock Option Plan (the &ldquo;Plan&rdquo;).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-indent: 0.5in">We have examined and are familiar with
(i) the Restated Certificate of Incorporation and the Bylaws of the Company as presently in effect; (ii) a Certificate of Existence
issued by the Connecticut Secretary of the State dated August 6, 2013; (iii) the corporate proceedings approving the Plan; (iv)
the Plan; (v) a form of the option grant agreements; and (vi) such other documents and instruments as we have considered necessary
for the purposes of the opinions hereinafter set forth.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-indent: 0.5in">In our examination of the aforesaid documents,
we have assumed the genuineness of all signatures, the legal capacity of all natural persons, the accuracy and completeness of
all documents submitted to us, the authenticity of all original documents, and the conformity to authentic original documents of
all submitted to us as copies (including telecopies). This opinion letter is given, and all statements herein are made, in the
context of the foregoing.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0pt; text-indent: 0.5in">Based upon the foregoing, we are of the
opinion that:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">1.</TD><TD STYLE="text-align: justify; padding-right: 1in">The Company has been duly incorporated and is a validly existing corporation
under the laws of the State of Connecticut.</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 1in 0pt; text-align: justify; text-indent: -0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 1in 0pt; text-align: justify; text-indent: -0.5in"></P>




<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 1in 0pt; text-align: justify; text-indent: -0.5in"></P>

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    <DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 0pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">&nbsp;</TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 1in 0pt; text-align: justify; text-indent: -0.5in"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 1in; text-align: justify; text-indent: -1in">As of August 14, 2013</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 1in; text-align: justify; text-indent: -1in">Page 2</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 1in 6pt; text-align: justify; text-indent: -1in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">2.</TD><TD STYLE="text-align: justify; padding-right: 1in">Upon issuance and delivery of the Shares pursuant to the Plan and the relevant
option agreements thereunder after the date hereof, and payment to the Company of the required option price for the Shares, the
Shares will be validly issued, fully paid, and nonassessable.</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-indent: 0.5in">This opinion letter is provided to you
for your benefit solely with regard to the Registration Statement, may be relied upon by you only in connection with the Registration
Statement, and may not be relied upon by any other person or for any other purpose without our prior written consent.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-indent: 0.5in">We are members of the Bar of the State
of Connecticut and some of us are members of other jurisdictions not relevant herein. In connection herewith, we express no opinion
on the laws of any jurisdiction other than the laws of the State of Connecticut.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0pt; text-indent: 0.5in">We hereby consent to the use of this
opinion and our names in connection with the Registration Statement.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0pt; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0pt; text-indent: 0.5in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 10pt Times New Roman, Times, Serif; width: 100%">
<TR STYLE="vertical-align: top; text-align: left">
    <TD>&nbsp;</TD>
    <TD COLSPAN="2">Very truly yours,</TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD STYLE="width: 50%">&nbsp;</TD>
    <TD STYLE="width: 5%">&nbsp;</TD>
    <TD STYLE="width: 45%">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD>&nbsp;</TD>
    <TD COLSPAN="2">BRODY WILKINSON PC</TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD>&nbsp;</TD>
    <TD>By:</TD>
    <TD STYLE="border-bottom: Black 1pt solid">/s/ James E. Rice</TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>James E. Rice, Vice President
and Secretary</TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-indent: 0.5in"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 243pt"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

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    <TD STYLE="width: 100%; border-bottom: Black 1pt solid">&nbsp;</TD></TR>
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<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>3
<FILENAME>acu_s8082013ex231.htm
<DESCRIPTION>EXHIBIT 23.1
<TEXT>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; color: green; text-align: right"><FONT STYLE="font-weight: normal; color: Black">Exhibit
23.1</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="color: Black"><B><U>Consent of
Marcum LLP, Independent Registered Public Accounting Firm </U></B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="color: Black">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="color: Black">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="color: Black; background-color: White">We consent
to the incorporation by reference in this Registration Statement of Acme United Corporation on Form S-8 of our report dated March
8, 2013, with respect to our audits of the consolidated financial statements of Acme United Corporation as of December 31, 2012
and 2011 and for the years then ended, appearing in the Annual Report on Form 10-K of Acme United Corporation for the year ended
December 31, 2012. </FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="color: Black; background-color: White">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="color: Black; background-color: White">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="color: Black; background-color: White">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="color: Black; background-color: White">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="color: Black; background-color: White">/s/ Marcum
LLP</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="color: Black; background-color: White">Marcum LLP</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="color: Black; background-color: White">New Haven,
Connecticut</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="color: Black; background-color: White">August 14,
2013</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; color: green; text-align: right"><FONT STYLE="font-weight: normal; color: Black">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="color: Black"><B>&nbsp;</B></FONT></P>

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    <TD STYLE="width: 100%; border-bottom: Black 1pt solid">&nbsp;</TD></TR>
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