Online Parts Store › Phillips Tapping Screws - Flat Head, #10 x 2-1/2" Image 1 of 1 Phillips Tapping Screws - Flat Head, #10 x 2-1/2" $23.87 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Seachoice 18-8 Stainless Steel Wing Nuts, 1/4-20 Size, Pack of 100 $110.41 Stainless Countersunk Finishing Washer, #5/16 $22.42 Square Tapping Screw - Flat Head,#12 x 2" $49.38 Flat Washer, #12, .050" Thick, OD 1/2" $15.75 Nylon Flat Washer 1/2", 0.62" Thick, OD 1-1/4" $36.72