Online Parts Store › Phillips Tapping Screws - Flat Head, #8 x 1/2" Image 1 of 1 Phillips Tapping Screws - Flat Head, #8 x 1/2" $12.41 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Phillips Tapping Screws - Oval Head, #10 x 3/4" $23.24 Lag Screw, 3/8 x 1-1/2" $63.91 Phillips Tapping Screws - Flat Head, #6 x 3/8" $9.01 Phillips Tapping Screws - Oval Head, #10 x 2" $27.33 Flat Washer, #10, .050" Thick, OD 9/16 $16.12