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Nuts have internal machine threads, for use with machine thread bolts and screws.

Nuts, Zinc plated steel

Nut

Hex nuts

A standard six sided nut.

Hex machine screw nut

Hex machine screw nuts

A hex nut in smaller sizes for machine screw diameters under 1/4".

Hex nylon insert lock nuts

Hex nylon insert lock nuts

A hex nut with a nylon ring to resist loosening.

Hex jam nut

Hex jam nuts

A thinner version of a hex nut.

Hex jam nylon insert lock nuts

Hex jam nylon insert lock nuts

A thinner version of a nylon insert lock nut.

K-Lock nut

K-Lock nuts

A nut with an attached free-spinning external tooth lock washer.

Flange nuts

Flange nuts

A nut with a built in washer.

Flange nuts serrated

Flange nuts serrated

A nut with a built in washer which is serrated to resist loosening.

Flange nuts oversize serrated

Flange nuts oversize serrated

A nut with a built in oversize washer which is serrated to resist loosening.

Flange nuts nylon insert

Flange nuts, nylon insert

A nut with a built in washer and a nylon insert to prevent loosening.

Flange nuts, prevailing torque

Flange nuts, prevailing torque

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.

Square nut

Square nuts

A four sided nut.

Two-way reversible lock nut

Two-way reversible lock nuts

A style of prevailing torque lock nut that can be installed either side up. Often used in high temperature applications. This style of lock nut deforms the threads of the mated fastener.

Prevailing torque lock nut

Prevailing torque lock nuts

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.

Castle nut

Castle nuts

A nut used in conjunction with a cotter pin.