EXTSW 9/16” ID x 1 3/8” OD x 1/8” thick 316 stainless washer
Actual size .570" ID x 1.365” OD x .125" thick
(+/-.003" on all dimensions)
.030" radius OD / slightly countersunk ID (no sharp edges)
Made in the USA. 316 Stainless has the ULTIMATE corrosion resistance.