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 Nylon Flat Washer 5/16", 0.62" Thick, OD 7/8" $37.54 Phillips Tapping Screws - Flat Head, #8 x 5/8" $12.41 Stainless Fender Washer #8, .050" Thick, OD 3/4" $21.67 Blind Rivet, 1/8" x 3/8" $61.05 Nylon Insert Locknut - Stainless 3/8-16 $28.40