1/4" 5/16" 3/8" UNC SET SCREWS IMPERIAL HEXAGON FULLY THREADED BOLTS ZINC PLATED

Hexagon head fully threaded set screws. UNC High Tensile Set Screws Zinc Plated. Thread pattern is UNC (Unified National Coarse). 1/4"UNC x 20tpi. 5/16"UNC x 18tpi. 3/8"UNC x 16tpi. All screws are fully threaded.

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