The M3 x 8W7 JIS B1188 Phil Pan Split Washer Flat Washer Sems M/S Zinc Yellow is a type of washer that is used to distribute the load of a screw or bolt over a larger surface area. It is made of zinc-plated steel and has a split washer design that helps to prevent the screw or bolt from loosening. The M3 x 8W7 size indicates that the washer has a 3mm inner diameter and an 8mm outer diameter. The JIS B1188 designation indicates that the washer meets the Japanese Industrial Standard for split washers. The Phil Pan head style gives the washer a lo