DIN 985 Prevailing torque thin hex nuts, non-metallic insert

Is DIN 985 still current?

No, it has been replaced. DIN 985 has been replaced by ISO 10511 (MechAtlas review: 27 October 2026). Use the replacement for new work, and check differences before interchanging parts.

What it covers

Former German thin nyloc nut standard.

Before you interchange parts

• DIN 985 → ISO 10511 / EN ISO 10511 (stated by catalogue): Prevailing torque hex nut with polyamide insert, low type

Parts that use DIN 985

• Prevailing-torque lock nut (nyloc) (Germany (DIN), old)
  Hex nut with a nylon (non-metallic) insert that grips the thread to resist loosening by vibration.
  DIN 985 - M12 - 8
  Withdrawn thin nyloc; replaced by DIN EN ISO 10511.

Official source

MechAtlas does not reproduce standards. Check the official edition at the publisher's page for DIN 985 or the DIN store.

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