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Nylon Insert Lock Nut (DIN 985)

The Nylon Insert Lock Nut (also known as Nyloc Nut) is a hex nut with a nylon ring insert.
When tightened onto a bolt, the nylon ring deforms slightly and grips the threads, creating strong frictional resistance. This prevents the nut from loosening due to vibration or long-term use.
It is widely used in industrial machinery, automotive, aerospace, and construction applications where reliable locking is required.

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Size & Material

  • Size: Metric M3–M30, Inch 1/8"–2" UNC/UNF

  • Material: Carbon Steel, Stainless Steel SUS304 (A2-70), Stainless Steel SUS316 (A4-70)

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Features

  • Manufactured according to DIN 985 / ISO 7040, complete specifications and high compatibility

  • Nylon insert provides reliable self-locking performance under vibration

  • Multiple material options: carbon steel with surface treatment, stainless steel SUS304 / SUS316 for high corrosion resistance

  • Available in both Metric and Inch (UNC/UNF) standards to meet different equipment requirements​

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Applications

  • Automation machinery and industrial equipment

  • Semiconductor and electronic assembly systems

  • Automotive and aerospace components

  • Construction and structural fastening

  • High-vibration and high-strength fastening positions

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