Online Parts Store › Phillips Tapping Screws - Flat Head, #6 x 1/2" Image 1 of 1 Phillips Tapping Screws - Flat Head, #6 x 1/2" $9.26 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Phillips Tapping Screws - Flat Head, #12 x 3" $42.89 Phillips Tapping Screw - Pan Head, #14 x 3" $61.60 Flat Washer, #6, .032" Thick, OD 3/8" $8.19 Nylon Insert Locknut - Stainless 5/16-18 $18.01 Phillips Tapping Screw - Pan Head, #10 x 1" $29.03