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IFI-100/107:2002

Prevailing-Torque Type Steel Hex and Hex Flange Nuts Regular and Light Hex Series

This standard establishes the dimensional, mechanical, and performance requirements for three grades of prevailing-torque type steel hex nuts in sizes No. 4 thru 1-1/2 in., and two grades of prevailing-torque type steel hex flange nuts in sizes 1/4 thru 3/4 in.

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Industrial Fasteners Institute [IFI]


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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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