Online Parts Store › Phillips Tapping Screws - Flat Head, #4 x 3/4" Image 1 of 1 Phillips Tapping Screws - Flat Head, #4 x 3/4" $13.73 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Phillips Tapping Screw - Truss Head #8 x 1-1/4" $39.30 Phillips Tapping Screws - Flat Head, #8 x 3/4" $12.91 Nylon Insert Locknut - Stainless 12-24 $75.96 Phillips Tapping Screws - Flat Head, #4 x 1" $14.93 Phillips Tapping Screws - Oval Head, #10 x 1-1/2" $36.59