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Thick Nuts

Thick nuts are, as their name implies, thick hex nuts. They offer increased thread engagement with the bolt/screw and more surface area for wrenching. Hex is short for hexagon, which means thick nuts have six sides.

Threads are standard right-hand and Unified inch coarse series (UNC, Unified National Coarse) or Unified inch fine (UNF, Unified National Fine).

Thick nut size refers to its nominal thread diameter. Typically, sizes range from about 1/4" to 1 1/2". Size is specified in inches, usually fractional rather than decimal. Not all types are available in all sizes.

Nut width and thickness vary with the size of the thick nut.

Grade 8, Yellow Zinc Plated, and Grade T9, Cadmium Dichromate Plated, are common grades and finishes. Some nuts are available from domestic (USA) manufacturers.

Always follow the manufacturer's recommendations regarding thick nut reuse, thread lubricants/locking compounds and torque values.

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