Online Parts Store › Phillips Tapping Screws - Flat Head, #10 x 1/2" Image 1 of 1 Phillips Tapping Screws - Flat Head, #10 x 1/2" $18.08 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Square Tapping Screw - Flat Head,#10 x 1-1/4" $48.20 Flat Washer, #12, .050" Thick, OD 1/2" $15.75 Carriage Bolt, 1/2"-13 x 3" $92.78 Flat Washer, 7/16", .062" Thick, OD 1-1/8" $27.80 Stainless Cotter Pin 3/32" x 1" $46.14