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This washer's unique geometry creates an interference both on the OD of a hex nut and on the ID on the shanks or the thread of the screw. As the screw is tightened the OD cold flows around the hex of a nut and the ID cold flows into the threads of the bolt or screw.
MaterialNatural Nylon 6/6
Standard next day delivery - £10
Next day delivery before noon - £24
Free delivery on all orders over £250
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