Nord-Lock International AB, Sweden
Nord-Lock Wedge Locking Washers in India
Nord-Lock washers stop bolts from coming loose, even under heavy vibration. R Square is an authorised Nord-Lock distributor supplying the full range across India.
The wedge-locking principle
How Nord-Lock wedge locking works
Each Nord-Lock washer comes as a pair. Cams on the inside, teeth on the outside. The teeth grip the bolt head and the surface. The cams are steeper than the thread. So if the bolt tries to turn loose, the wedge pulls it tighter instead, and the turning stops.
Illustration, not to scale.
6 product families
Nord-Lock product range
Original washers
For any bolt that faces vibration.
View original washers
X-series washers
Locks the bolt and keeps it tight as the joint settles.
View x-series washers
Steel construction washers
For structural bolts in steel buildings and bridges.
View steel construction washers
Wheel nuts
Keeps truck and mining vehicle wheels tight.
View wheel nuts
Combi nuts
Nut and washers in one, for faster assembly.
View combi nuts
Custom solutions
Special sizes and materials for unusual jobs.
View custom solutionsProduct guide
Which Nord-Lock product do I need?
Video
See wedge locking explained
Nord-Lock explains the wedge-locking principle in this short Q&A. A washer pair grips the bolt head and the joint with its teeth, so any movement can only happen between the cams. Because the cams are steeper than the thread, a bolt that tries to turn loose is pulled tighter instead.
Official Nord-Lock Group video, played from YouTube.FAQ
Common questions
What is a Nord-Lock washer?
A pair of washers that locks a bolt using wedge action, so vibration can’t loosen it.
Do Nord-Lock washers work with lubricated bolts?
Yes. Lubrication doesn’t affect the locking.
Can they be reused?
Yes, in most cases, depending on operating conditions.
Which bolt grades do they work with?
They are designed for bolts up to strength class 12.9.
When should I not use them?
On surfaces harder than the washer, or on joints that are not tightened to a set preload. Ask us if unsure.
Guides