Smooth surface without burrs,Standard hole position, uniform force, not easy to , easy to use
Fine workmanship, new structure, strength, and strong stability, intensity and .
A washer with grooves,teeth,or ridges that grip firmly in to the surfaces to provide a strong against unwanted turning.
good Load Distribution: even distribution and surface damage with these flat washers.
[Wide Application] Countersunk washers are used in a variety of applications including construction, machinery, automotive, and other industries, and can also be used to fasten metal, plastic, wood, or other materials.