EXTSW 1/2” ID x 3/4” OD x 3/16” Thick 304 Alloy Stainless Washers
Actual size .507 ID x .740” OD x .188" thick
(+/- .003" on all dimensions)
.030 inch Radius OD / slightly countersunk ID (no sharp edges)
Made in USA. 304 Stainless has very GOOD corrosion resistance.