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 Flat Washer, 3/8", .062" Thick, OD 1" $38.36 Nylon Insert Locknut - Stainless 1/2-13 $35.14 Phillips Tapping Screws - Oval Head, #12 x 2-1/2" $39.93 Lag Screw, 3/8 x 1-1/2" $63.91 Flat Washer, 5/8", .078" Thick, OD 1-1/2" $22.42