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IFI-124:2002
Test Procedures for the Performance of Nonmetallic Resistant Element Prevailing-Torque Screws
This standard establishes a conformance test procedure for the performance of Nonmetallic Resistant Element Prevailing-Torque Screws (REPT screws), in nominal screw sizes No. 0 thru 1½ in.
Industrial Fasteners Institute [ifi]