Online Parts Store › Phillips Machine Screw - Oval Head, 1/4"-20 x 3-1/2" Image 1 of 1 Phillips Machine Screw - Oval Head, 1/4"-20 x 3-1/2" $50.70 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Stainless Cotter Pin 1/16" x 1/2" $9.76 Stainless Cotter Pin 1/16" x 1" $17.13 Phillips Tapping Screws - Oval Head, #10 x 1-1/4" $28.85 Stainless Cotter Pin 5/32" x 1-1/2" $64.12 Phillips Tapping Screw - Pan Head, #12 x 3/4" $37.60