UNC HIGH TENSILE STEEL SOCKET BUTTON HEAD ALLEN BOLT SCREWS 1/4" 5/16" 3/8"

Thread - UNC (Imperial coarse). Grade - 8 (10.9) High tensile steel. Thread sizes - 1/4"-20tpi, 5/16"-18tpi, 3/8"-16tpi. Finish - Plain steel / black. TECHNICAL INFORMATION.

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