The M5 x 20W10 JIS B1188 Phil Pan Split Washer Flat Washer Sems M/S Zinc Yellow is a type of fastener used to secure two or more pieces of material together. It consists of a split washer, a flat washer, and a screw. The split washer is placed under the screw head, and the flat washer is placed over the screw head. The screw is then tightened, causing the split washer to spread out and grip the material. The flat washer helps to distribute the load of the screw over a larger area, preventing the material from being damaged. This type of fastene