Online Parts Store › Phillips Tapping Screws - Flat Head, #8 x 1-1/2" Image 1 of 1 Phillips Tapping Screws - Flat Head, #8 x 1-1/2" $23.56 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Phillips Tapping Screws - Flat Head, #6 x 1-1/2" $16.94 Stainless Fender Washer 1/4", .062" Thick, OD 1-1/2 $103.98 Socket Set Screw 1/4"-20 x 1/4" $26.96 Stainless Countersunk Finishing Washer, #8 $14.36 Flat Washer, 1/2", .078" Thick, OD 1-3/8" $74.51