24, Stainless steel, US, 1-1/4"

Bolts with hexagonal heads and machine threads for use with a nut or in a tapped hole. Also known as hex cap screws or machine bolts.

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

Bolts with no drive and machine threads for use with a nut.

Screws with an Allen wrench drive.

Screws with no head and machine threads for use in a tapped hole.

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.

Screws with an unthreaded shoulder that is larger in diameter than the threads. Also known as stripper bolts.