Online Parts Store › Square Tapping Screw - Flat Head,#10 x 1-1/4" Image 1 of 1 Square Tapping Screw - Flat Head,#10 x 1-1/4" $48.20 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Stainless Countersunk Finishing Washer, #12 $18.89 Phillips Tapping Screws - Flat Head, #4 x 3/4" $13.73 Phillips Tapping Screws - Oval Head, #10 x 3/4" $23.24 Flat Washer, 1/2", .078" Thick, OD 1-1/4" $38.42 Stainless Cotter Pin 3/32" x 1-1/2" $56.56