Online Parts Store › Phillips Tapping Screw - Truss Head #8 x 1/2" Image 1 of 1 Phillips Tapping Screw - Truss Head #8 x 1/2" $18.52 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Phillips Tapping Screws - Oval Head, #12 x 1-1/2" $30.55 Flat Washer, 5/16", .062" Thick, OD 7/8" $52.44 Phillips Tapping Screw - Pan Head, #10 x 1-1/2" $36.40 Carriage Bolt, 1/2"-13 x 3" $92.78 Phillips Tapping Screw - Pan Head, #14 x 3/4" $49.38