M4 x 40W9 JIS B1188 Phil Pan Split Washer Flat Washer Sems M/S Zinc
The M4 x 40W9 JIS B1188 Phil Pan Split Washer Flat Washer Sems M/S Zinc 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 washer is 40mm in diameter and has a thickness of 0.9mm. It is suitable for use with M4 screws or bolts.