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24, US, Zinc, 1", Combo

US Fasteners, 24, Zinc, 1", Combo

Combination truss head

Machine screws

Screws with machine threads for use with a nut or in a tapped hole.

Sex bolt & Mating screw

Sex bolts & Mating screws

Sex bolts resemble machine screws, but with internal threads, and can be used with either specialized mating screws or standard machine screws. Also known as barrel nuts and Chicago bolts.