Nuts have internal machine threads, for use with machine thread bolts and screws.
A standard six sided nut.
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A hex nut with a nylon ring to resist loosening.
A thinner version of a hex nut.
A nut with a built in washer.
A nut with a built in washer which is serrated to resist loosening.
An all metal lock nut with a built in washer often used in high temperature applications. This style of lock nut deforms the threads of the mated fastener. Can be domed or flat style.
A long nut used to connect pieces of threaded rod or other male threaded fasteners.
An all metal lock nut that is often used in high temperature applications. This style of lock nut deforms the threads of the mated fastener.
General use flat washer