Online Parts Store › Phillips Tapping Screws - Flat Head, #4 x 1" Image 1 of 1 Phillips Tapping Screws - Flat Head, #4 x 1" $14.93 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Phillips Tapping Screw - Pan Head, #10 x 5/8" $24.31 Square Tapping Screw - Oval Head #8 x 1" $32.17 Phillips Tapping Screw - Pan Head, #10 x 1/2" $21.73 Nylon Insert Locknut - Stainless 3/8-16 $28.40 Phillips Tapping Screws - Oval Head, #12 x 1-1/4" $22.30