The M2.6 x 8W6.5 JIS B1188 Phil Pan Split Washer Flat Washer Sems M/S Zinc Yellow is a type of fastener that is used to secure two or more pieces of material together. It consists of a pan head screw, a split washer, and a flat washer. The pan head screw has a rounded head with a slotted drive. The split washer is a thin, springy washer that is placed under the screw head. The flat washer is a larger washer that is placed over the split washer. The entire assembly is then tightened, which causes the split washer to compress and the flat washer