EXTSW 1/2-13 Tapped / Threaded ID x 1" OD x 5/8" Thick 304 Stainless Spacer 7/16" ID beveled stainless washer Sulfur is added to the

Sulfur is added to the 303 alloy which makes it easier to machine

250" thick  Beveled

316 Stainless has the ULTIMATE corrosion resistance

507” ID x

EXTSW 7/16” ID x 1” OD x 1” thick 316 Stainless Spacer

EXTSW 1/2-13 Tapped / Threaded ID x 1" OD x 5/8" Thick 304 Stainless Spacer 7/16" ID beveled stainless washer Sulfur is added to theEXTSW 1 2 13 Tapped threaded ID x 1 OD x 5 8" thick 304 stainless spacer, boss Actual size 1 2 13 Tapped ID x . 990 OD x . 625 thick (+ . 003 on all dimensions) . 030 inch Radius OD slightly countersunk ID (no sharp edges) Made in USA. 304 Stainless has the very GOOD corrosion resistance.