Governments have their own standards for procedure, compatibility, and manufacture which may or may not be the same as industry. Military specifications are extremely important for government contracts and supply, most of which are mandatory. Individual States also issue standards.
Standards that have been incorporated by reference in the U.S. Code of Federal Regulations (CFR). Provides free, read-only access to voluntary consensus standards that have been incorporated into federal laws and regulations.
A non-regulatory federal agency within the U.S. Commerce Department's Technology Administration. NIST's mission is to develop and promote measurement, standards, and technology to enhance productivity, facilitate trade, and improve the quality of life.