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 Stainless Fender Washer #10, .062" Thick, OD 1" $48.06 Phillips Tapping Screws - Flat Head, #14 x 1-1/2" $28.97 Phillips Tapping Screw - Truss Head #10 x 1-1/4" $50.76 Stainless Countersunk Finishing Washer, #5/16 $22.42 Carriage Bolt, 1/2"-13 x 4" $109.86