Nyloc Nut

Nylock Nut (Nylon Insert Lock Nut)

A Nylock nut (also called a nylon insert lock nut) is a hex nut with a nylon ring inside the top that locks onto the bolt threads and prevents loosening due to vibration or movement.

Product Description

Nylock nuts are internally threaded fasteners designed with a nylon insert that grips the bolt threads. When the bolt is tightened, the nylon insert creates friction that keeps the nut from loosening even under vibration or shock loads. They are widely used in automotive, machinery, construction, and industrial assemblies where secure fastening is required.

Key Features

  • Self-locking design with nylon insert

  • High resistance to vibration loosening

  • Reusable for several installations

  • Strong and durable fastening

  • Available in different materials and grades

We offer in following grades-

  • Carbon Steel

  • Alloy Steel

Standards

  • DIN 985

  • DIN 982

Applications

  • Automotive parts

  • Industrial machinery

  • Agricultural equipment

  • Construction structures

  • Electrical and consumer appliances

Nylock Nut Size Chart

Thread Size (d) Thread Pitch (mm) Nut Height (h) (mm) Width Across Flats (s) (mm) Nylon Insert Diameter (Approx mm)
M3 0.5 4.0 5.5 2.6
M4 0.7 5.0 7 3.6
M5 0.8 5.0 8 4.5
M6 1.0 6.0 10 5.4
M8 1.25 8.0 13 7.2
M10 1.5 10.0 17 9.0
M12 1.75 / 1.5 12.0 19 10.8
M14 2.0 / 1.5 14.0 22 12.6
M16 2.0 / 1.5 16.0 24 14.6
M18 2.5 18.0 27 16.6
M20 2.5 20.0 30 18.4
M22 2.5 22.0 32 20.4
M24 3.0 24.0 36 22.4

 

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