Online Parts Store › Phillips Tapping Screws - Oval Head, #10 x 1/2" Image 1 of 1 Phillips Tapping Screws - Oval Head, #10 x 1/2" $24.75 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Phillips Tapping Screws - Flat Head, #14 x 3" $59.58 Seachoice 18-8 Stainless Steel Wing Nuts, 5/16-18 Size, Pack of 50 $101.59 Phillips Tapping Screws - Oval Head, #12 x 2" $30.67 Square Tapping Screw - Flat Head,#10 x 1-1/2" $62.54 Stainless Cotter Pin 3/32" x 1-1/2" $56.56