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NORD-LOCK® NL SC

BN 14044 - Wedge lock washers adhered in pairs for HV screws

Product information: www.nord-lock.com
Other documentation: www.bossard.com

Brand
Brand NORD-LOCK®
Brandtype
Brandtype NL SC
Material
Material Steel
Material execution
Material execution through-hardened
Surface
Surface zinc flake coated
Notes on use
Notes on use

Alla funktioner


Produktbeskrivning

Product information: www.nord-lock.com
Other documentation: www.bossard.com

Mer information

The Nord-Lock® NL SC wedge lock washer combines the proven locking solution with a European Technical Approval for steel structures.
A technical brochure is available on request.

Funktioner

Brand
Brand NORD-LOCK®
Brandtype
Brandtype NL SC
Material
Material Steel
Material execution
Material execution through-hardened
Surface
Surface zinc flake coated
Notes on use
Notes on use

Functional principle

Because the cam angle "α" is greater than the thread pitch "β" a wedge locking effect secures the fastener against rotational loosening, even under the most severe conditions.

NORD-LOCK® NL SC wedge lock washers must not be used on unsurfaced surfaces.
Not recommended for:
- Surface hardness greater than the hardness of the washer (465HV)
- Very soft surfaces like wood or plastic

Additional Infomation:
When used as intended, Nord-Lock® NL SC Wedge Locking Washers with PEINER HV Sets for (planned) pre-stressed bolted connections secure against loosening or unscrewing - even under dynamic loads - and thus achieve a permanent pre-stressing force in your bolted connection.

Illustration functional principle

Assembly notice

The Nord-Lock® NL SC wedge lock washer has the chamfer on the inside diameter that is characteristic of HV fittings, so that there is always an optimum contact surface between the HV bolt and the Nord-Lock® NL SC wedge lock washer.

The HV nuts are lubricated for installation. Correct installation is achieved by screwing on the HV nut EN14399-4 with the corresponding HV bolt EN14399-4 and SC washers ~EN14399-6. Pairing of the same make ensures the correct matching and the intended tightening behaviour. Additional lubrication of bolts, nuts and washers changes the preload parameters and causes assembly errors.

Illustration assembly


Warnings

Washers are to be used with bolts and nuts EN 14399-4.
Nord-Lock® NL SC wedge lock washers increase in comparison to the regular HV washer according to EN 14399-6 the clamping length of the screw connection by up to 3 mm!
The use of Nord-Lock® NL SC wedge lock washers changes the friction conditions when tightening the screw set and therefore also the torque to be applied.




Lämplig för detta


BN 20363 - EN 14399-4

PEINER - Heavy hex head bolts HV - Steel - 10.9 - hot dip galvanized

BN 14070 - EN 14399-4

PEINER - Heavy hex nuts HV for heavy hex head bolts HV - Steel - 10 - hot dip galvanized