Self-Locking Nuts

From vibration resistance to extreme temperature resistance, our high-strength locking nuts can provide a solution. Our team of highly skilled engineers can also design, prototype, and manufacture nuts to meet your custom requirements.

Nylstop® Self-Locking Nut

  • The Nylstop® nut is designed to stop nut and bolt disengagement during use. 
  • The internal nylon ring deforms around the threads as the nut is twisted onto the bolt, ensuring a tight, vibration-resistant grip on the bolt.

Nylstop® Nut brochure

DHE Series Nut

  • A 12-point nut for extremely high torque control.
  • Ideal for difficult reach applications.

DHE Series brochure

MHT Series Nut

  • Low scatter locking torque, high-fatigue self-locking nut.
  • A conical shaped nut, where the diameter of the upper part of the nut is slightly reduced.
  • Six vertical slots will open gradually while the nut is screwed onto the bolt.
  • The elasticity provided by the particular shape of the nut will ensure the required locking torque.

MHT Series brochure

PH Series Nut

  • Small, thinwall, lightweight, self-locking and extremely strong.
  • An aerospace-quality nut that is useful when space and weight are at a premium.

PH Series brochure

Custom Parts and Special Capabilities

In addition to a variety of self-locking nuts, Howmet Fastening Systems facilities have the engineering know-how and manufacturing capabilities of designing and producing customized parts for a wide range of applications. Contact us to find out how we can help.

Cold Forging Capability Brochure

Contact Information

UK and Ireland
+44 (0) 7748 144076

North America, Asia and Australia
+33 (0) 2433 14173