Twolok® SEMS nuts are available as hex nuts with flat washer, conical washer, contact washer or specific washer. The principle of this design is the prevention against loosening in dynamic environments by means of tension load when tightening the nuts.

  • Applications
  • Features
Twolok nuts

Due to its great performance of high tensile, vibration resistant and optimum structure, Twolok® SEMS nuts are commonly used in applications with strong vibrations like

  • Powertrains
  • Vehicle bodies
  • Engines and gear boxes
  • Internal and external trims
  • Other parts with strong vibrations

Twolok nuts
  • Proven anti-loosening solution
  • Optimum assembly saves time and cost
  • High durability, long service life
  • Nut property class 8
  • Big size range M5-M12

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