Carbon Steel Star Lock Fixing Washer

Serrated washers are also known as tooth lock washer or star washer. The presence of serrations in such a manner that they extend radially inward or outward the component. Serrations present on the Washer bite into the bearing surface, which is why they tend to be well equipped as a lock type. In particular, during their use in conjunction with a soft substrate, like aluminum or plastic. Another reason for the preference of Star Lock Washers over plain washers is that they resist rotation more than the flat type on hard surfaces. The logic behind this is the presence of some form of tension. Tension, between Washer and the surface, exists over a much smaller area, the teeth. There are four types of star washers: internal, external, combination, as well as countersunk.