Online Parts Store › Flat Washer, #10, .050" Thick, OD 9/16 Image 1 of 1 Flat Washer, #10, .050" Thick, OD 9/16 $16.12 316 Stainless Steel. Add To Cart Added! 316 Stainless Steel. You Might Also Like Lag Screw, 3/8 x 1-1/2" $63.91 Stainless Cotter Pin 5/32" x 2" $84.08 Phillips Tapping Screw - Truss Head #8 x 1" $30.99 Phillips Wood Screw - Flat Head, #14 x 3" $73.50 Square Tapping Screw - Flat Head,#8 x 1" $27.12