Nyloc Nut



A Nyloc nut, also referred to as a Nylon insert lock nutis a locking nut which includes a Nylon collar insert.

The plastic insert is placed at the end of the nut and its inner diameter is slightly smaller than the major diameter of the screw thread.

The insert deforms elastically over the threads of the screw, but threads are not cut into the nylon.

The nylon insert locks the nut in two ways. First, it forces the bottom face of the screw threads against the top face of the nut threads, increasing the friction
 between the two. Second, the nylon applies a compressive force against the screw itself.

Nyloc nuts retain their locking ability up to 120 °C

Available in the following materials:

  • Steel
  • Stainless Steel

Available with the following coatings:

  • Zinc Plated
  • Hot Dip Galvanised
  • Sherardized
  • Dacromet
  • Rilsan

These are stocked in both metric and imperial thread forms as follows:

  • Metric coarse
  • Metric Fine
  • BA
  • UNF
  • UNC
  • Whitworth
  • BSF


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