Online Parts Store › Phillips Tapping Screws - Oval Head, #12 x 2-1/2" Image 1 of 1 Phillips Tapping Screws - Oval Head, #12 x 2-1/2" $39.93 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Flat Washer, 3/8", .062" Thick, OD 5/8" (A/N Style) $11.46 Lag Screw, 3/8 x 1-1/2" $63.91 Nylon Insert Locknut - Stainless 12-24 $75.96 Phillips Self Drilling Screw - Pan Head #10 x 3/4" $36.40 Flat Washer, #10, .050" Thick, OD 7/16 $13.35