Online Parts Store › Phillips Tapping Screws - Flat Head, #6 x 3/4" Image 1 of 1 Phillips Tapping Screws - Flat Head, #6 x 3/4" $10.33 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Stainless External Tooth Lock Washer 5/16" $19.48 Square Tapping Screw - Oval Head #10 x 1-1/2" $35.29 Phillips Tapping Screws - Flat Head, #14 x 1" $45.79 Seachoice 18-8 Stainless Steel Wing Nuts, 1/4-20 Size, Pack of 100 $110.41 Square Tapping Screw - Flat Head,#10 x 1-1/2" $62.54