EXTSW .692” ID x 1 1/8” OD x 1/4” Thick 316 Stainless Washer
Actual size .692" ID x 1.115" OD x .250" 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.