Disc-Lock^TM Wedge Locking Nuts

• 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

1. 1) Nut
2. 2) Hexagon-flanged Washer
3. 3) Flat-faced Cup Washer

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".