The main role of flat washers is to increase the size of a screw's bearing surface area, and reduce the surface pressure applied on the fastened object. Looseness can result when the bearing surface sinks under the surface pressure, so using a flat washer to reduce the surface pressure is very effective.
Material: Stainless Steel
Units: 20 Units
Application: They can be useful when working with soft materials and oversized or irregular shaped holes.