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 Phillips Tapping Screw - Pan Head, #8 x 3/8" $12.60 Stainless Fender Washer 1/4", .062" Thick ,OD 1" $39.24 Phillips Tapping Screws - Flat Head, #6 x 1/2" $9.26 Stainless Fender Washer #10, .062" Thick, OD 1" $48.06 Phillips Tapping Screws - Flat Head, #8 x 1/2" $12.41