Significant accounting policies (Policies)	9 Months Ended
Sep. 30, 2025
Accounting Policies [Abstract]
Basis of Presentation	Basis of presentation. In the opinion of management, the accompanying unaudited Condensed Consolidated Financial Statements for the interim periods presented contain all adjustments necessary to present fairly the financial position of Chicago Rivet & Machine Co. (the “Company”) as of September 30, 2025 (unaudited) and December 31, 2024, and the results of operations and changes in cash flows for the indicated periods. Certain information and note disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") have been condensed or omitted from these unaudited financial statements in accordance with applicable rules. These unaudited Condensed Consolidated Financial Statements should be read in conjunction with the audited financial statements and the notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2024.
Principles of Consolidation	Principles of Consolidation. The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiary, H & L Tool Company, Inc. (“H & L Tool”). All significant intercompany accounts and transactions have been eliminated. Certain amounts in the Condensed Consolidated Financial Statements and accompanying notes may not sum due to rounding. Certain prior period data has been reclassified to conform to the current period presentation.
Use of estimates	Use of estimates. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results may differ from those estimates. The results of operations for the three and nine months ended September 30, 2025 are not necessarily indicative of the results to be expected for the year.
Assets held-for-sale	Assets held-for-sale. The Company classifies assets as held-for-sale if all held-for-sale criteria are met pursuant to ASC 360-10, Property, Plant and Equipment. Criteria include management commitment to sell the disposal group in its present condition and the sale being deemed probable of being completed within one year. Assets classified as held for sale are not depreciated and are measured at the lower of their carrying amount or fair value less cost to sell. The Company assesses the fair value of a disposal group, less any costs to sell, each reporting period it remains classified as held-for-sale and reports any subsequent changes as an adjustment to the carrying value of the disposal group, as long as the new carrying value does not exceed the initial carrying value of the disposal group.
Leases	Leases. The Company leases certain office space for its corporate headquarters. The Company determines if an arrangement contains a lease at the inception of a contract. The lease classification is determined at the commencement date. For identified operating leases, such as the corporate headquarters, the Company recognizes a right-of-use (“ROU”) asset and a lease liability on the balance sheet. The lease liability is measured at the present value of future lease payments over the lease term, using the Company's incremental borrowing rate when the implicit rate is not readily determinable. The ROU asset is recognized at the lease liability amount, adjusted for any indirect costs or rent prepayments, and reduced by any lease incentives and deferred lease payments. Lease expense is recognized on a straight-line basis over the term of the lease and included within selling and administrative expenses.
New accounting pronouncements	New accounting pronouncements. Not yet adopted. In November 2024, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2024-03, Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses, which requires disclosure in the notes to the financial statements of specified information about certain costs and expenses. In January 2025, the FASB issued ASU 2025-01, Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40), which amends the effective date of ASU 2024-03 to clarify that all public business entities are required to adopt the guidance in annual reporting periods beginning after December 15, 2026, and interim periods within annual reporting periods beginning after December 15, 2027. Early adoption of ASU 2024-03 is permitted. ASU 2024-03 should be applied either prospectively to financial statements issued for reporting periods after the effective date or retrospectively to any or all prior periods presented in the financial statements. The Company is currently evaluating the new guidance to determine the impact it may have on the consolidated financial statements and related disclosures, but expects only additional disclosures upon adoption. In December 2023, the FASB issued ASU No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, to enhance the transparency and decision usefulness of income tax disclosures providing investors with information to better assess how an entity’s operations and related tax risks and tax planning and operational opportunities affect its tax rate and prospects for future cash flows. The new guidance is effective for annual periods beginning after December 15, 2024. The Company is evaluating the impact that it will have on our consolidated financial statements and disclosures.
Credit risk	The Company extends credit on the basis of terms that are customary within our markets to various companies doing business primarily in the automotive industry. The Company has a concentration of credit risk primarily within the automotive industry and in the Midwestern United States. The Company has established an allowance for accounts that may become uncollectible in the future. This estimated allowance is based primarily on management's evaluation of the financial condition of the customer and historical experience. The Company monitors its accounts receivable and charges to expense an amount equal to its estimate of potential credit losses. The Company considers a number of factors in determining its estimates, including the length of time its trade accounts receivable are past due, the Company's previous loss history and the customer's current ability to pay its obligation. The Company also considers current economic conditions, the economic outlook and industry-specific factors in its evaluation. Accounts receivable balances are charged off against the allowance when it is determined that the receivable will not be recovered.
Revenue	The Company operates in the fastener industry and is in the business of producing and selling rivets, cold-formed fasteners and parts, screw machine products, automatic rivet setting machines and parts and tools for such machines. Revenue is recognized when control of the promised goods or services is transferred to our customers, generally upon shipment of goods or completion of services, in an amount that reflects the consideration we expect to receive in exchange for those goods or services. For certain assembly equipment segment transactions, revenue is recognized based on progress toward completion of the performance obligation using a labor-based measure. Labor incurred and specific material costs are compared to milestone payments per sales contract. Based on our experience, this method most accurately reflects the transfer of goods under such contracts. During the third quarter of 2025, the Company realized $327,626 related to such contracts and has a remaining performance obligation of $149,892 which is expected to be recognized during the fourth quarter of 2025. At September 30, 2025, there were $10,460 contract assets relating to these contracts. Sales taxes we may collect concurrent with revenue producing activities are excluded from revenue. Revenue is recognized net of certain sales adjustments to arrive at net sales as reported on the statement of operations. These adjustments primarily relate to customer returns and allowances, which vary over time. The Company records a liability and reduction in sales for estimated product returns based upon historical experience. If we determine that our obligation under warranty claims is probable and subject to reasonable determination, an estimate of that liability is recorded as an offset against revenue at that time. As of September 30, 2025 and December 31, 2024 accrued liabilities for warranty claims were $880,000 and $1,057,000, respectively. Cash received by the Company prior to transfer of control is recorded as unearned revenue. Shipping and handling fees billed to customers are recognized in net sales, and related costs as cost of sales, when incurred. Sales commissions are expensed when incurred because the amortization period is less than one year. These costs are recorded within Selling and administrative expenses in the Condensed Consolidated Statements of Operations.
Income Taxes	The Company’s effective tax rates were zero and (32.0)% for the nine months ended September 30, 2025 and 2024, respectively. The Company’s federal income tax returns for the 2021 through 2024 tax years are subject to examination by the Internal Revenue Service (“IRS”). Management does not anticipate any adjustments that would result in a material change to the results of operations or financial condition of the Company as a result of any unrecognized tax benefits. No statutes of limitation have been extended on any of the Company’s federal income tax filings. The statute of limitations on the Company’s 2021 through 2024 federal income tax returns were set to expire on October 15, 2025 through 2028, respectively. The Company’s state income tax returns for the 2021 through 2024 tax years remain subject to examination by various state authorities with the latest closing period on October 31, 2028. The Company is not currently under examination by any state authority for income tax purposes and no statutes of limitation for state income tax filings have been extended. Our income tax expense, deferred tax assets and liabilities, and liabilities for unrecognized tax benefits reflect management’s best estimate of current and future taxes to be paid. Significant judgments and estimates are required in the determination of the consolidated income tax expense. Deferred income taxes arise from temporary differences between the tax basis of assets and liabilities and their reported amounts in the financial statements, which will result in taxable or deductible amounts in the future. In evaluating our ability to recover our deferred tax assets in the jurisdiction from which they arise, we consider all available positive and negative evidence, including scheduled reversals of deferred tax liabilities, projected future taxable income, tax-planning strategies, and results of recent operations. In projecting future taxable income, we begin with historical results and incorporate assumptions about the amount of future state and federal pretax operating income adjusted for items that do not have tax consequences. The assumptions about future taxable income require the use of significant judgment and are consistent with the plans and estimates we are using to manage the underlying businesses. A valuation allowance is established when necessary to reduce deferred income tax assets to the amounts expected to be realized. Based upon the analysis performed as of September 30, 2025, management believes that it is more likely than not that the benefit from net operating loss ("NOL") carryforwards and other deferred tax assets will not be realized. Accordingly, management concluded to record a valuation allowance of $1,761,457 on the deferred tax assets and no deferred tax expense in the nine months ended September 30, 2025. A valuation allowance of $1,776,596 was recorded as of December 31, 2024. As of December 31, 2024, federal income tax NOL carryforwards were $9,456,000 and state NOL carryforwards were $3,698,000. However, an Internal Revenue Code Section 382 analysis has not been performed to determine availability of NOL to offset future taxable income, and the utilization of NOL may be limited under the Internal Revenue Code Section 382 as a result of changes in ownership of the Company's stock over the loss periods and prior to utilization of the carryforwards. On July 4, 2025, the U.S. government enacted The One Big Beautiful Bill Act of 2025, (known as the "One Big Beautiful Bill Act" or "OBBBA") which makes permanent many of the tax provisions enacted in 2017 as part of the Tax Cuts and Jobs Act that were set to expire at the end of 2025. In addition, the OBBBA makes changes to certain U.S. corporate tax provisions. The most notable change for the Company will be the reintroduction of 100% bonus depreciation, whereby the Company can immediately deduct 100% of eligible fixed asset purchases for tax purposes in year one. The Company is currently evaluating the impact of the new legislation but does not expect it to have a material impact on the results of operations.

Significant accounting policies (Policies)

9 Months Ended

Sep. 30, 2025

Basis of presentation. In the opinion of management, the accompanying unaudited Condensed Consolidated Financial Statements for the interim periods presented contain all adjustments necessary to present fairly the financial position of Chicago Rivet & Machine Co. (the “Company”) as of September 30, 2025 (unaudited) and December 31, 2024, and the results of operations and changes in cash flows for the indicated periods. Certain information and note disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") have been condensed or omitted from these unaudited financial statements in accordance with applicable rules. These unaudited Condensed Consolidated Financial Statements should be read in conjunction with the audited financial statements and the notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2024.

Principles of Consolidation

Principles of Consolidation. The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiary, H & L Tool Company, Inc. (“H & L Tool”). All significant intercompany accounts and transactions have been eliminated. Certain amounts in the Condensed Consolidated Financial Statements and accompanying notes may not sum due to rounding. Certain prior period data has been reclassified to conform to the current period presentation.

Use of estimates

Use of estimates. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results may differ from those estimates. The results of operations for the three and nine months ended September 30, 2025 are not necessarily indicative of the results to be expected for the year.

Assets held-for-sale

Assets held-for-sale. The Company classifies assets as held-for-sale if all held-for-sale criteria are met pursuant to ASC 360-10, Property, Plant and Equipment. Criteria include management commitment to sell the disposal group in its present condition and the sale being deemed probable of being completed within one year. Assets classified as held for sale are not depreciated and are measured at the lower of their carrying amount or fair value less cost to sell. The Company assesses the fair value of a disposal group, less any costs to sell, each reporting period it remains classified as held-for-sale and reports any subsequent changes as an adjustment to the carrying value of the disposal group, as long as the new carrying value does not exceed the initial carrying value of the disposal group.

Leases

Leases. The Company leases certain office space for its corporate headquarters. The Company determines if an arrangement contains a lease at the inception of a contract. The lease classification is determined at the commencement date. For identified operating leases, such as the corporate headquarters, the Company recognizes a right-of-use (“ROU”) asset and a lease liability on the balance sheet. The lease liability is measured at the present value of future lease payments over the lease term, using the Company's incremental borrowing rate when the implicit rate is not readily determinable. The ROU asset is recognized at the lease liability amount, adjusted for any indirect costs or rent prepayments, and reduced by any lease incentives and deferred lease payments. Lease expense is recognized on a straight-line basis over the term of the lease and included within selling and administrative expenses.

New accounting pronouncements

New accounting pronouncements.

Not yet adopted. In November 2024, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2024-03, Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses, which requires disclosure in the notes to the financial statements of specified information about certain costs and expenses. In January 2025, the FASB issued ASU 2025-01, Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40), which amends the effective date of ASU 2024-03 to clarify that all public business entities are required to adopt the guidance in annual reporting periods beginning after December 15, 2026, and interim periods within annual reporting periods beginning after December 15, 2027. Early adoption of ASU 2024-03 is permitted. ASU 2024-03 should be applied either prospectively to financial statements issued for reporting periods after the effective date or retrospectively to any or all prior periods presented in the financial statements. The Company is currently evaluating the new guidance to determine the impact it may have on the consolidated financial statements and related disclosures, but expects only additional disclosures upon adoption.

In December 2023, the FASB issued ASU No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, to enhance the transparency and decision usefulness of income tax disclosures providing investors with

information to better assess how an entity’s operations and related tax risks and tax planning and operational opportunities affect its tax rate and prospects for future cash flows. The new guidance is effective for annual periods beginning after December 15, 2024. The Company is evaluating the impact that it will have on our consolidated financial statements and disclosures.

Credit risk

The Company extends credit on the basis of terms that are customary within our markets to various companies doing business primarily in the automotive industry. The Company has a concentration of credit risk primarily within the automotive industry and in the Midwestern United States. The Company has established an allowance for accounts that may become uncollectible in the future. This estimated allowance is based primarily on management's evaluation of the financial condition of the customer and historical experience. The Company monitors its accounts receivable and charges to expense an amount equal to its estimate of potential credit losses. The Company considers a number of factors in determining its estimates, including the length of time its trade accounts receivable are past due, the Company's previous loss history and the customer's current ability to pay its obligation. The Company also considers current economic conditions, the economic outlook and industry-specific factors in its evaluation. Accounts receivable balances are charged off against the allowance when it is determined that the receivable will not be recovered.

Revenue

The Company operates in the fastener industry and is in the business of producing and selling rivets, cold-formed fasteners and parts, screw machine products, automatic rivet setting machines and parts and tools for such machines. Revenue is recognized when control of the promised goods or services is transferred to our customers, generally upon shipment of goods or completion of services, in an amount that reflects the consideration we expect to receive in exchange for those goods or services. For certain assembly equipment segment transactions, revenue is recognized based on progress toward completion of the performance obligation using a labor-based measure. Labor incurred and specific material costs are compared to milestone payments per sales contract. Based on our experience, this method most accurately reflects the transfer of goods under such contracts. During the third quarter of 2025, the Company

realized $327,626 related to such contracts and has a remaining performance obligation of $149,892 which is expected to be recognized during the fourth quarter of 2025. At September 30, 2025, there were $10,460 contract assets relating to these contracts.

Sales taxes we may collect concurrent with revenue producing activities are excluded from revenue. Revenue is recognized net of certain sales adjustments to arrive at net sales as reported on the statement of operations. These adjustments primarily relate to customer returns and allowances, which vary over time. The Company records a liability and reduction in sales for estimated product returns based upon historical experience. If we determine that our obligation under warranty claims is probable and subject to reasonable determination, an estimate of that liability is recorded as an offset against revenue at that time. As of September 30, 2025 and December 31, 2024 accrued liabilities for warranty claims were $880,000 and $1,057,000, respectively. Cash received by the Company prior to transfer of control is recorded as unearned revenue.

Shipping and handling fees billed to customers are recognized in net sales, and related costs as cost of sales, when incurred.

Sales commissions are expensed when incurred because the amortization period is less than one year. These costs are recorded within Selling and administrative expenses in the Condensed Consolidated Statements of Operations.

Income Taxes

The Company’s effective tax rates were zero and (32.0)% for the nine months ended September 30, 2025 and 2024, respectively.

The Company’s federal income tax returns for the 2021 through 2024 tax years are subject to examination by the Internal Revenue Service (“IRS”). Management does not anticipate any adjustments that would result in a material change to the results of operations or financial condition of the Company as a result of any unrecognized tax benefits. No statutes of limitation have been extended on any of the Company’s federal income tax filings. The statute of limitations on the Company’s 2021 through 2024 federal income tax returns were set to expire on October 15, 2025 through 2028, respectively.

The Company’s state income tax returns for the 2021 through 2024 tax years remain subject to examination by various state authorities with the latest closing period on October 31, 2028. The Company is not currently under examination by any state authority for income tax purposes and no statutes of limitation for state income tax filings have been extended.

Our income tax expense, deferred tax assets and liabilities, and liabilities for unrecognized tax benefits reflect management’s best estimate of current and future taxes to be paid. Significant judgments and estimates are required in the determination of the consolidated income tax expense. Deferred income taxes arise from temporary differences between the tax basis of assets and liabilities and their reported amounts in the financial statements, which will result in taxable or deductible amounts in the future. In evaluating our ability to recover our deferred tax assets in the jurisdiction from which they arise, we consider all available positive and negative evidence, including scheduled reversals of deferred tax liabilities, projected future taxable income, tax-planning strategies, and results of recent operations. In projecting future taxable income, we begin with historical results and incorporate assumptions about the amount of future state and federal pretax operating income adjusted for items that do not have tax consequences. The assumptions about future taxable income require the use of significant judgment and are consistent with the plans and estimates we are using to manage the underlying businesses.

A valuation allowance is established when necessary to reduce deferred income tax assets to the amounts expected to be realized. Based upon the analysis performed as of September 30, 2025, management believes that it is more likely than not that the benefit from net operating loss ("NOL") carryforwards and other deferred tax assets will not be realized. Accordingly, management concluded to record a valuation allowance of $1,761,457 on the deferred tax assets and no deferred tax expense in the nine months ended September 30, 2025. A valuation allowance of $1,776,596 was recorded as of December 31, 2024. As of December 31, 2024, federal income tax NOL carryforwards were $9,456,000 and state NOL carryforwards were $3,698,000. However, an Internal Revenue Code Section 382 analysis has not been performed to determine availability of NOL to offset future taxable income, and the utilization of NOL may be limited under the Internal Revenue Code Section 382 as a result of changes in ownership of the Company's stock over the loss periods and prior to utilization of the carryforwards.

On July 4, 2025, the U.S. government enacted The One Big Beautiful Bill Act of 2025, (known as the "One Big Beautiful Bill Act" or "OBBBA") which makes permanent many of the tax provisions enacted in 2017 as part of the Tax Cuts and

Jobs Act that were set to expire at the end of 2025. In addition, the OBBBA makes changes to certain U.S. corporate tax provisions. The most notable change for the Company will be the reintroduction of 100% bonus depreciation, whereby the Company can immediately deduct 100% of eligible fixed asset purchases for tax purposes in year one. The Company is currently evaluating the impact of the new legislation but does not expect it to have a material impact on the results of operations.