01 October 2009
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Cold flows to ensure tight washer seal

The geometry of a range of metric locking and sealing washers from MicroPlastics creates interference both on the outside diameter (OD) of a hex nut and the inside diameter (ID) on the shanks or 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. The parts are moulded in nylon 6/6 and are currently offered in 13 metric screw sizes ranging from M3 to M8 and samples are available on request.

Paul Gay


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