EXTSW BEVELED 3/8"(.383") ID x 2" (1.990") OD x 1/4" Thick 316 Stainless washer
EXTSW 383" ID x 1.990" OD x 250" 316 for 
Fits ARP #613, 623, 713, 723 3/8" Bolts)
Recessed .052" x .630" 
(+/- .003" on all dimensions) 
.030 inch Radius OD / slightly countersunk ID (no sharp edges)
 Made in USA. 316 Stainless has the ULTIMATE corrosion resistance.