EXTSW 5/8" ID x 1.990" OD x 1 1/4" Long 304 Stainless Spacer 5/8" ID 316 stainless washer 304 Stainless has the very

304 Stainless has the very GOOD corrosion resistance

EXTSW 1/2” ID x 1

EXTSW 3/8” ID x 2” OD x 1/4” thick 304 alloy stainless washers

757” ID x 1 3/8” OD x 5/8” Thick 316 Alloy Stainless  Washer

Some other websites will list their washers as "18-8" or just "stainless steel"

EXTSW 5/8" ID x 1.990" OD x 1 1/4" Long 304 Stainless Spacer 5/8" ID 316 stainless washer 304 Stainless has the veryEXTSW 5 8 ID x 1 OD x 1 1 4 Long 304 Stainless Spacer Actual size . 632" ID x . 990 OD x 1. 250" 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.