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Fuji Lock Nut

Steel Class 8, Zinc

Base DIN 980M

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Class 8 Steel / Fuji Style Lock Nut

Fuji hex locking nuts can be installed and removed multiple times. The locking mechanism for this nut is a set of two or three retaining teeth made of spring steel. The interference between the locking teeth and the threads of the mating bolt prevents loosening during vibration.

The all metal construction is better for higher temperature installations where a nylon-insert lock nut might fail.

Class 8 metric hex nuts provide a medium strength, high tensile fastening solution. Commonly paired with Class 8.8 bolts and screws. Zinc Plated finish provides corrosion resistance without sacrificing strength.

Also known as metric spring stop nut or Fujilock nut, all-metal spring-lock hex nut, 360 degree prevailing torque nut.