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 Flat Washer, 5/8", .078" Thick, OD 1-1/2" $22.42 Phillips Tapping Screws - Flat Head, #4 x 3/4" $13.73 Phillips Tapping Screw - Truss Head #8 x 1-1/2" $63.30 Lock Washer,1/2" $24.75 Seachoice 18-8 Stainless Steel Wing Nuts, 1/4-20 Size, Pack of 100 $110.41