UNF ZINC 12.9 SOCKET CAP ALLEN BOLTS PART THREAD HIGH TENSILE

Thread - UNF (AF) (Imperial fine). Grade - 12.9 High tensile, zinc plated steel. Thread sizes listed -. 1/4" - 28 tpi. 5/8" - 18 tpi. 7/16" - 20 tpi. 1/2" - 20 tpi. 5/16" - 24 tpi.

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