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Nord-Lock created the original wedge-locking technology that secures bolted joints, even when exposed to severe vibration and dynamic loads. It is impossible for our products to loosen unintentionally due to the wedge created underneath the bolt head and nut.

SHELL CHEMICALS

WEDGE-LOCK WASHERS

Nord-Lock wedge-locking washers utilise tension instead of friction in order to secure bolted joints exposed to severe vibration and dynamic loads.

Over the operational life cycle, Nord-Lock washers offer increased operational reliability and lower maintenance costs, while significantly reducing the risks of production stops, accidents and warranty claims.

 

How it works?   Download Catalog

 

X-SERIES WASHERS

The Nord-Lock X-series washers combine Nord-Lock wedge-locking with an innovative spring effect, offering the highest security against spontaneous bolt loosening and slackening.

This product is the optimum choice when you have both vibrations and applications with risk of slackening such as short clamp length, multiple clamped parts, gaskets, soft metals, plastic composites, coatings and thermal cycling.

Nord-Lock X-series steel washer promises the highest corrosion resistance in the market, it is tested at least 1,000 hours in the Neutral Salt Spray Test.

 

How it works?

 

SHELL CHEMICALS

Technology

Nord-Lock created the original wedge-locking technology that secures bolted joints, even when exposed to severe vibration and dynamic loads. It is impossible for our products to loosen unintentionally due to the wedge created underneath the bolt head and nut.

SHELL CHEMICALS

WEDGE-LOCKING TECHNOLOGY

Nord-Lock wedge-locking technology secures bolted joints with tension instead of friction. The system is composed of a pair of lock washers with cams on one side and radial teeth on the other.

Nord-Lock wedge-locking products secure the fastener in a joint which cannot be loosened even when subjected to extreme vibration or dynamic loads. The Nord-Lock range includes steel construction washers, wheel nuts, combi bolt washers and custom solutions.

Installation guide

Tapped Holes

The blind hole Nord-Lock lock washers are embedded in the corresponding substrate surface and securely lock the bolts.

Counterbores

The outer diameter of Nord-Lock X-series washers is specifically designed for countersunk holes (ie the washers are installed under standard bolt heads).

Through holes

For all lock washers, two pairs of Nord-Lock X-series washers are required for the through holes-one pair for bolts and the other for nuts.

Stud bolts

Nord-Lock X series washers securely lock the nut on the stud bolts without the use of adhesives.

Application

To optimize the load distribution for applications with large / slotted holes or with soft underlying surface, use a flanged nut / bolt together with Nord-Lock "SP" washers with enlarged outer diameter.

Designs where Nord-Lock washers are not recommended

Mating surfaces that are not locked in place (see left figure) Mating surfaces harder than the washers Very soft mating surface, e.g. wood, plastic Applications with extremely large settlements Non-preloaded joints
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