Online Parts Store › Phillips Tapping Screws - Flat Head, #12 x 1-3/4" Image 1 of 1 Phillips Tapping Screws - Flat Head, #12 x 1-3/4" $31.87 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Square Tapping Screw - Flat Head,#8 x 1-1/2" $31.67 Nylon Insert Locknut - Stainless 1/2-13 $35.14 Phillips Tapping Screws - Flat Head, #6 x 1-1/2" $16.94 Stainless Countersunk Finishing Washer, #4 $13.29 Flat Washer, 3/8", .062" Thick, OD 1" $38.36