This washer is manufactured by Sweden's Nord-Lock using a unique technology and has a strong anti-loosening effect. Two uniquely shaped washers are combined to provide a locking effect that uses tension rather than frictional resistance. Bolts and nuts can be loosened using tools, and washers that have been removed can be reused to prevent loosening. They are used in a variety of industries including energy generation, transportation, oil extraction (offshore), mining and quarrying, construction and bridge construction, manufacturing and processing, shipbuilding, agriculture and forestry, large transportation equipment, and the military. Also called Nord-Lock washers.
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