Online Parts Store › Phillips Tapping Screws - Flat Head, #6 x 1-1/2" Image 1 of 1 Phillips Tapping Screws - Flat Head, #6 x 1-1/2" $16.94 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Phillips Tapping Screws - Oval Head, #10 x 3" $32.37 Carriage Bolt, 1/2"-13 x 3" $92.78 Flat Washer, 1/4", .050" Thick, OD 1/2" (A/N Style) $11.46 Phillips Tapping Screws - Flat Head, #4 x 1" $14.93 Phillips Tapping Screw - Truss Head #10 x 3/4" $31.18