Nut (hardware)

   

A nut is a type of hardware fastener with a threaded hole. Nuts are usually hexagonal to permit tightening with a wrench but may also be square, knurled, winged or otherwise shaped. Along with a bolt, nuts are designed to capture and fasten objects together.

Nuts are graded with strength ratings compatible with their respective cap screws; for example, a PROPERTY CLASS 8.8 nut will be able to support the rated torque and clamp load of a PROPERTY CLASS 8.8 cap screw.

Types of nuts

wing nuts, hex nut, hex flange nut, flanged weld nuts for stud welding
Enlarge
wing nuts, hex nut, hex flange nut, flanged weld nuts for stud welding
slotted, square, cap, locking "nylock" and castellated nuts
Enlarge
slotted, square, cap, locking "nylock" and castellated nuts
  • simple nut
  • flange nut
  • locking nut
  • lug nut
    • polymer insert
    • oval lock
    • castellated nut
  • T-nut
  • slotted nut
  • weld nut
  • wing nut
  • knurled nut, thumb nut
  • insert nut
    • rivet
    • staked/welded (for plastic)
  • turnbuckle
  • T-groove-nut

See also

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