US Fasteners, 1/2", Stainless steel 18-8, 40

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  Hex bolts

  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.

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  Machine screws

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

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  Socket screws

  Screws with an Allen wrench drive.

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  Set screws

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

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  Spacers & Standoffs

  Spacers are unthreaded sleeves that fit over bolts or screws to maintain space between components. Standoffs are used to separate and support parts, commonly in electronic assemblies or hardware setups.

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  Shoulder bolts

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