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Disc-LockTM Wedge Locking Nuts


Features and Benefits
  • Patented Heavy-duty, self-locking designs
  • Can be used with bolts up to Class 10.9, Grade 8
  • One piece assembly
  • No washer required
  • Coated in RoHS-compliant Magni® 565 (Other coatings available by special order), providing protection of 720 hours in salt spray testing
  • Easy to install with standard tools
  • Easy to remove and reusable
  • Custom sizes available
  • No re-tightening needed once installed
  • Vibration proof according to MIL-STD-1312-7

How Does It Work?

Two Piece Locking Nuts
The Disc-Lock Two Piece Locking Nut consists of two components, each with interlocking cams that are joined together to form a one piece assembly. The top component is a threaded hexagon nut with cams on the underside and a pilot that retains the washer. The bottom component is a hex flange washer with cams on the top and a smooth bearing surface. When the assembly is subjected to vibration and shock, the interlocking cams of the Disc-Lock Locking Nut attempt to rise against each other. Because the angle of the cam is greater than the pitch angle of the thread on the stud, a wedging action takes place and the Disc-Lock Locking Nut locks and will not come loose, maintaining the clamp load and protecting the joint.

Two Piece Locking Nuts are available in the following sizes: 3/8", 7/16", 1/2", 9/16", 5/8", M10, M12, M14, M16.


Three Piece Locking Nuts
The Disc-Lock Three Piece Locking Nut consists of three components:
  1. 1) Nut
  2. 2) Hexagon-flanged Washer
  3. 3) Flat-faced Cup Washer

  4. These sections are joined together to form a one-piece assembly with a C-clip. The top two sections (1&2) are a hexagonal nut and a hexagonal washer with interlocking cams. When subjected to shock or vibration, the interlocking cams of the Disc-Lock Locking Nut attempt to rise against each other. Because the angle of the cam is greater than the pitch angle of the thread on the stud, a wedging action takes place and the Disc-Lock Locking Nut locks and will not come loose, maintaining the clamp load and protecting the joint.

    Three Piece Locking Nuts are available in the following sizes: M10, M20, M22, 3/8", 7/8".

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Two Piece Wedge Locking Nuts, logo

Disc-Lock™ Two Piece Wedge Locking Nuts

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Three Piece Wedge Locking Nuts, logo

Disc-Lock™ Three Piece Wedge Locking Nuts

(6)
Heavy Hex Nuts

Disc-Lock™ Heavy Hex Nuts

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