Online Parts Store › Phillips Tapping Screws - Flat Head, #8 x 3" Image 1 of 1 Phillips Tapping Screws - Flat Head, #8 x 3" $36.09 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Carriage Bolt, 1/2"-13 x 5" $49.07 Square Tapping Screw - Flat Head,#8 x 1-1/2" $31.67 Phillips Tapping Screw - Truss Head #8 x 3/4" $17.19 Phillips Tapping Screw - Pan Head, #10 x 3" $37.54 Stainless Fender Washer 5/16", .078" Thick, OD 1-1/2 $54.04