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Revenue: Disaggregation of Revenue (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenue	$ 9,304,949	$ 7,576,455
United Sates
Revenue	7,568,212	6,489,411
Foreign
Revenue	1,736,737	1,087,044
Automotive
Revenue	5,092,442	4,447,196
Nonautomotive
Revenue	4,212,507	3,129,259
Fastener
Revenue	8,148,678	6,737,397
Fastener | United Sates
Revenue	6,437,852	5,740,925
Fastener | Foreign
Revenue	1,710,826	996,472
Fastener | Automotive
Revenue	5,059,469	4,413,737
Fastener | Nonautomotive
Revenue	3,089,209	2,323,660
Assemby Equipment
Revenue	1,156,271	839,058
Assemby Equipment | United Sates
Revenue	1,130,360	748,486
Assemby Equipment | Foreign
Revenue	25,911	90,572
Assemby Equipment | Automotive
Revenue	32,973	33,459
Assemby Equipment | Nonautomotive
Revenue	$ 1,123,298	$ 805,599

X

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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-Topic 280
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
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Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130545-203045

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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