Online Parts Store › Stainless Countersunk Finishing Washer, #12 Image 1 of 1 Stainless Countersunk Finishing Washer, #12 $18.89 316 Stainless Steel. Add To Cart Added! 316 Stainless Steel. You Might Also Like Phillips Tapping Screws - Flat Head, #12 x 3" $42.89 Phillips Tapping Screw - Pan Head, #10 x 1-1/2" $36.40 Stainless Cotter Pin 1/16" x 3/4" $17.76 Nylon Insert Locknut - Stainless 10-32 $25.51 Phillips Tapping Screws - Flat Head, #14 x 2-1/2" $57.69