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Nord-Lock Steel Delta Protekt Washers

Nord-Lock Steel Delta Protekt Washers

more products by Other Makes
Available Options:

Ref. Code: FNL10

Nord-Lock Steel Washers - Various sizes and quantities available.

£48.98
£58.78 inc. VAT

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Nord-Lock Steel Delta Protekt Washers

Steel washers with Zinc flake coating (Delta Protekt®) are available in NL3-NL42 (standard sizes)

and NL45-NL130 (upon request).

Standard

 

Enlarged (sp)

 

NORD-LOCK washers with enlarged outer diameter (sp) in combination with flanged nuts/ bolts are recommended for use on large/long holes, painted surfaces or soft materials, e.g. aluminium.

 

Locking Function Information:

NORD-LOCK is a pair of washers with a wedge-locking action meeting DIN 25201 which is a unique method using tension instead of friction. The rise of the cams between the NORD-LOCK washers is greater than the pitch of the bolt. In addition, there are radial teeth on the opposite side. The washers are installed in pairs, cam face to cam face.

When the bolt and/or nut is tightened the teeth grip and seat the mating surfaces. The NORD-LOCK washer is locked in place, allowing movement only across the face of the cams. Any attempt from the bolt/nut to rotate loose is blocked by the wedge effect of the cams.

 

Here you see what happens when a bolt is untightened with a wrench. The pair of washers expand more than the corresponding pitch of the thread allows the bolt/nut to rise.

NORD-LOCK washers positively lock the fastener in a joint which is subjected to any kind of vibration or dynamic loads.
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