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 Wood Screw - Flat Head, #10 x 2" $44.47 Flat Washer, #10, .050" Thick, OD 7/16 $13.35 Phillips Tapping Screw - Pan Head, #10 x 1-3/4" $26.26 Phillips Tapping Screws - Flat Head, #4 x 1" $14.93 Flat Washer, 1/2", .078" Thick, OD 1-1/4" $38.42