NUTS
Cap Nut
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A nut with a finished top. Bolts
must be in the proper length.
Cap Nut Open End

Acorn nuts are a high crown type
of cap nut used for appearance.
Castle Nut
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A hex nut with a slightly
reduced slotted cylindrical section on one end. Used with a cotter pin
and drilled fastener to prevent loosening.
Coupling Nut
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Coupling nuts are long nuts used
to connect pieces of threaded rod or other male threaded fasteners.
Flange Nut
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A nut with a built in washer
which is serrated to resist vibration.
Forged Wing
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A nut with 'wings' for
easy manual assembly.
Heavy Hex
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Jam Nut
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A thinner version of a hex nut in
sizes ¼ and up.
K-Lock
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A nut with an attached
free-spinning external tooth lock washer. Speeds installation.
Machine Screw Nut
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Nylon
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Prevailing torque lock
nuts


All metal lock nuts are
non-reversible and often used high temperature applications. These
nuts are non-reversible because removal often damages the threads.
Slotted Nut
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A nut with slots cut into
it for the insertion of a cotter pin. Used with a drilled shank
fastener. Similar to a castle nut.
Square Nut
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Square nuts, once very common,
were mostly replaced by hex nuts. Can also be used in a channel or
welded in place.
Self Clinching Nut

Designed to provide
strong threads in a minimum of space
T-Nuts


A type of nut used to fasten to
wood, particle or composite materials, leaving a flush surface.