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 Blind Rivet, 1/8" x 1/4" $43.39 Square Tapping Screw - Flat Head,#12 x 2" $49.38 Flat Washer, 1/2", .078" Thick, OD 1-3/8" $74.51 Carriage Bolt, 1/2"-13 x 4" $109.86 Nylon Insert Locknut - Stainless 10-32 $25.51