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

Nuts

Nut

Hex nuts

A standard six sided nut.

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.

Structural nuts A194 grade 2H

Structural nuts A194 grade 2H

A194 nuts are used in special-purpose applications such as high service temperatures and pressures. Also suitable for use with A325 structural bolts.

Structural nuts A563 grade DH

Structural nuts A563 grade DH

The standard nut used for A325 structural bolts and structural bolting applications.

Heavy hex nut

Heavy hex nuts

A heavier pattern version of a standard hex nut.

Heavy hex jam nuts

Heavy hex jam nuts

A heavier pattern version of a standard hex jam nut. Also known as a propeller 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.

Acorn nut

Acorn nuts

A high crown type of cap nut used for appearance. Bolts must be in the proper length.