Install as a pair
The two washers are positioned with their cam faces together beneath the fastener.
Multi-function joint security
Nord-Lock X-Series Washers
Wedge-locking protection with an integrated spring effect for joints exposed to vibration, settlement and relaxation.
Nord-Lock Group technologyProduct overview
Built for secure, serviceable joints.
X-Series Washers combine the Nord-Lock wedge-locking principle with a conical spring shape. The design addresses both rotational loosening and the loss of preload that can follow settlement in softer joint materials.
- Counters rotational loosening through wedge-locking geometry
- Adds elasticity to compensate for settlement and relaxation
- Helps maintain clamp load in painted or composite joints
- Supports tapped holes, through holes, studs and counterbores
- Available for demanding dynamic-load applications
How it works
Two functions in one washer pair
The cam faces provide the mechanical lock, while the conical shape adds a spring reserve to the joint.
Create wedge-locking
Outer serrations hold the mating surfaces while the cams resist rotational movement.
Add spring travel
The conical profile provides elasticity as joint materials settle or relax.
Protect preload
The combined action helps the connection resist both loosening and slackening.
Typical applications
Where this solution fits.
01Wind energy and power generation
02Rail, automotive and off-highway vehicles
03Heavy machinery and construction
04Painted, polymer, composite or gasketed joints
05Manufacturing and processing equipment
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