EXTSW 3/8” ID x 1” OD x .150” Thick 316 Stainless washer
Actual dimensions .383" ID x .990" OD x .150" Thick
(+/- .003" on all dimensions)
.030 inch Radius OD / slightly countersunk ID (no sharp edges)
Made in USA. 316 Stainless has the ULTIMATE corrosion resistance.