Online Parts Store › Stainless Countersunk Finishing Washer, #6 Image 1 of 1 Stainless Countersunk Finishing Washer, #6 $13.10 316 Stainless Steel. Add To Cart Added! 316 Stainless Steel. You Might Also Like Phillips Tapping Screws - Oval Head, #10 x 2-1/2" $29.85 Lock Washer, M5 $10.83 Phillips Tapping Screw - Pan Head, #12 x 1-1/4" $23.49 Flat Washer, #12, .050" Thick, OD 1/2" $15.75 Stainless Fender Washer #10, .062" Thick, OD 1" $48.06