M4 x 12W9 JIS B1188 Phil Pan Split Washer Flat Washer Sems M/S Zinc Yellow
The M4 x 12W9 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. It is made of steel and has a zinc yellow finish. The washer has a split design that allows it to be easily installed and removed. It is also designed to prevent the screw or bolt from loosening.