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 Flat Washer, 5/16", .062" Thick, OD 7/8" $21.67 Stainless Cotter Pin 1/16" x 3/4" $17.76 Square Tapping Screw - Oval Head #10 x 1-1/4" $57.05 Phillips Tapping Screws - Oval Head, #10 x 1-1/2" $36.59 Nylon Flat Washer 3/8", 0.62" Thick, OD 1" $57.19