R Square Technologies · Authorised Nord-Lock Group distributor, Chennai

#1 Authorised Nord-Lock Distributor, Pan India

Nord-Lock wedge locking washers and bolting solutions. Supplied from Chennai to every part of India.

Product demo & video Range of Products

Since 2015In bolting solutions
Pan IndiaSupply from Chennai
100% genuineNord-Lock products

Nord-Lock Original washers

Product demo

See how Nord-Lock wedge locking works

**How does the Nord-Lock washer work?**
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.

What the video shows

How the washer pair grips the bolt head and the joint
Why a bolt that tries to turn loose is pulled tighter instead
Locking by bolt tension, not by friction

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Nord-Lock range

Nord-Lock products we supply

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 solutions

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.

01Fit the pairCams face each other. Teeth face the bolt head and the joint.
02TightenThe teeth grip both surfaces, so movement can only happen across the cams.
03VibrationThe cams ride up and the wedge pulls the bolt tighter. It cannot turn loose.

**How the Nord-Lock washers work (animated video)**
This 76-second animation explains the principle behind Nord-Lock washers. Their original wedge-locking technology secures a bolted joint even under severe vibration and dynamic loads. The wedge that forms under the bolt head or nut means the bolt cannot loosen by itself.
Official Nord-Lock Group video, played from YouTube.

Who we are

Your Nord-Lock partner in India

R Square Technologies is an authorised distributor for the Nord-Lock Group in India. We supply Nord-Lock, Superbolt and Boltight products. Since 2015 we have helped plants, OEMs and contractors across India keep their bolts tight.

The problem

Loose bolts stop machines

Vibration slowly turns bolts loose. A loose bolt can stop a line, damage a machine or hurt someone. Nord-Lock washers lock the bolt with tension, not friction. So vibration can’t turn it.