Online Parts Store › Stainless Countersunk Finishing Washer, #10 Image 1 of 1 Stainless Countersunk Finishing Washer, #10 $14.99 316 Stainless Steel. Add To Cart Added! 316 Stainless Steel. You Might Also Like Stainless Cotter Pin 5/32" x 1-1/2" $64.12 Nylon Insert Locknut - Stainless 3/8-16 $28.40 Flat Washer, 1/4", .050" Thick, OD 1/2" (A/N Style) $11.46 Stainless External Tooth Lock Washer #10 $14.42 Phillips Tapping Screws - Flat Head, #14 x 2" $41.13