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 Phillips Wood Screw - Flat Head, #8 x 3/4" $43.08 Phillips Tapping Screws - Oval Head, #10 x 5/8" $28.59 Phillips Tapping Screw - Pan Head, #14 x 1-1/2" $37.79 Phillips Tapping Screws - Flat Head, #8 x 1-1/4" $19.34 Flat Washer, 5/8", .078" Thick, OD 1-1/2" $22.42