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Fastener Standards for Screws, Bolts, and Studs

Screws, bolts, and studs share many features with regard to their form, and, as a result, many standards apply to more than one kind of these closely related fasteners. However, there are of course differentiating features between them, and so they also have standards specific to each of them in addition to unifying standards such as those for threading, heads, and sockets.

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Bolt Specific Standards

These standards from ASME, SAE, ISO, and others address bolts, their quality and construction, and their different forms.

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As the voice of the U.S. standards and conformity assessment system, the American National Standards Institute (ANSI) empowers its members and constituents to strengthen the U.S. marketplace position in the global economy while helping to assure the safety and health of consumers and the protection of the environment.

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