Online Parts Store › Square Tapping Screw - Flat Head,#10 x 1-1/2" Image 1 of 1 Square Tapping Screw - Flat Head,#10 x 1-1/2" $62.54 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Phillips Tapping Screw - Pan Head, #14 x 3/4" $49.38 Phillips Tapping Screw - Truss Head #10 x 1-1/4" $50.76 Phillips Tapping Screw - Pan Head, #8 x 3/8" $12.60 Phillips Tapping Screw - Truss Head #8 x 1-1/4" $39.30 Flat Washer, #6, .032" Thick, OD 3/8" $8.19