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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
All Titles
Title 40
Chapter I
Part 204
Subpart A - Subpart A—General Provisions
§ 204.1 - General applicability.
§ 204.2 - Definitions.
§ 204.3 - Number and gender.
§ 204.4 - Inspection and monitoring.
§ 204.5 - Exemptions.
§ 204.5-1 - Testing exemption.
§ 204.5-2 - National security exemptions.
§ 204.5-3 - Export exemptions.
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