Online Parts Store › Stainless Countersunk Finishing Washer, #8 Image 1 of 1 Stainless Countersunk Finishing Washer, #8 $14.36 316 Stainless Steel. Add To Cart Added! 316 Stainless Steel. You Might Also Like Flat Washer, 1/2", .078" Thick, OD 1-3/8" $74.51 Lag Screw, 3/8 x 3" $41.46 Socket Set Screw 1/4"-20 x 1/4" $26.96 Phillips Tapping Screw - Truss Head #10 x 3/4" $31.18 Stainless Fender Washer #6, .050" Thick, OD 3/4" $19.71