Seat the washer pair
The construction washer is installed in the location normally occupied by the compatible plain washer.
Secure structural bolting
Nord-Lock Construction Washers
Wedge-locking washer pairs developed for structural steel bolt and nut assemblies exposed to vibration and movement.
Nord-Lock Group technologyProduct overview
Built for secure, serviceable joints.
Nord-Lock SC-Washers use paired cams and radial serrations to resist rotational loosening in steel construction. Their geometry allows them to replace a plain or chamfered washer in compatible structural bolting assemblies.
- Wedge-locking security for structural bolting
- Suitable for compatible preloaded and non-preloaded assemblies
- Can replace a standard plain or chamfered washer in suitable joints
- Resists vibration without relying on added friction
- Clear mechanical locking principle for critical connections
How it works
Made for steel construction joints
The pair sits beneath the nut or bolt head, with serrations against the mating surfaces and cams facing inward.
Engage the serrations
Tightening allows the outer teeth to grip the fastener and steel joint surfaces.
Block rotation
Any loosening movement is redirected between the cams and opposed by the wedge effect.
Verify the assembly
Bolt grade, assembly standard, dimensions and preload requirements must be checked for the complete joint.
Typical applications
Where this solution fits.
01Structural steel frameworks
02Bridges and transport infrastructure
03Industrial buildings and platforms
04Preloaded high-strength bolting assemblies
05Non-preloaded structural bolting assemblies
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