A cap nut, also called a cap nut or crown nut, is a fastener with a domed top that covers the exposed end of a bolt or threaded rod. They are usually hexagonal in shape and can be easily installed...
The spring pad is tight and the flat washer is placed under the spring pad to produce a plan. Generally, 2 are applied with each other. 1, the effect of spring washer is to tighten the nut to give...