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Aerotight Lock Nut SS

Stainless Steel

Base DIN 980V

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Detail & Specs

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Stainless Steel / AEROTIGHT Coarse Thread
*Sold Per Piece*

Aerotight all-metal lock nuts spin freely until the thread of the mating fastener reaches the horizontal locking slits on the collar of the nut. The interference expands against the mating threads and locks the assembly together. Able to be reused many times.

Full engagement: Tighten until mating screw is roughly 2 threads beyond the top locking portion of the nut.


  • Easy install and remove, Aerotight nuts can be reused many times
  • High temperature applications to 300 Degrees Celcius (no nylon insert)
  • Self Locking for Extreme vibration, shock and impact resistant
  • Does not need to be seated to lock / can be used as a "stop nut"

Stainless lock nuts are commonly used in damp environments for corrosion resistance, popular across a wide range of industries: automotive, agriculture, food processing, clean energy, etc. For any application involving marine (salt water), use A4 / 316 Stainless Steel material, available as special order.

Special Order Variations
Additional Sizes: M2.5, M3, M4, M5, M16, M20, M24
Additional Materials: A4 Stainless Steel

Also known as aero lock nut, split beam nut, prevailing torque split hex nut, slotted beam nut or stiff nut