Toothed washers can have external or internal teeth, or both, and can be provided as countersunk to order. A toothed washer with external teeth holds teeth that are twisted to grip and extend radially outwards, to bite into the bearing surface – and is effective as a lock washer when used with soft substrates like aluminium or plastic. A toothed washer with internal teeth has teeth that extend radially inward to bite into the bearing surface – and the internal serration makes the washer look more aesthetically pleasing.
Ningbo Weifeng Fastener Co., Ltd., established in the year 2003, is a global industry and trade combined company. Our company is specialized in developing, manufacturing, trading and providing services for fasteners and hardware tools.
