Online Parts Store › Phillips Tapping Screws - Flat Head, #12 x 1-1/2" Image 1 of 1 Phillips Tapping Screws - Flat Head, #12 x 1-1/2" $19.84 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Phillips Tapping Screws - Flat Head, #6 x 5/8" $9.57 Nylon Flat Washer 1/2", 0.62" Thick, OD 1-1/4" $36.72 Phillips Tapping Screws - Oval Head, #10 x 1-1/4" $28.85 Flat Washer, #10, .050" Thick, OD 9/16 $16.12 Stainless Fender Washer #8, .050" Thick, OD 3/4" $21.67