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Nord-Lock®  vibration proof American standard Nord-Lock®
vibration proof
American standard
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The Nord-Lock washer has cams or wedges on one side with a lead angle greater than a thread angle and radical teeth or ribs on the other side. The washers are installe cam face to cam face forming the unique Nord-Lock washer.
When tightening the washer to preload, the teeth penetrate and seat against the joint material and the nut and/or fastener head.
When subjected to vibration, the interacting cams create a wedge action thereby maintaining preload in the joint which prevent the fasteners from vibrating loose.
Nord-Lock washers can be used on standard as well as high grade bolts. When tightening, a 20% higher torque is used than that applied to standard flat electro-zinc plated washers.
Nord-Lock steel washers are manufactured  from C1020 low carbon steel and heat treated.
+zinc flake coated with Delta Protekt® providing 600 hours of salt spray test as per ISO 9227.   
Important note: Please note that quantites in our listings refers to pairs.

Enter the exact quantity you require and we will do our best to accomodate you. Upon receipt of your inquiry, we will confirm our best price and delivery. 

Please note that a much larger range of Nord-Lock®  washers are available in our metric washer section.

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