Online Parts Store › Phillips Machine Screw - Oval Head, 1/4"-20 x 5" Image 1 of 1 Phillips Machine Screw - Oval Head, 1/4"-20 x 5" $34.64 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Flat Washer, 5/16", .062" Thick, OD 7/8" $21.67 Phillips Tapping Screws - Flat Head, #6 x 1-1/4" $15.93 Nylon Insert Locknut - Stainless 5/16-24 $46.35 Stainless Fender Washer #10, .050" Thick, OD 3/4" $18.58 Phillips Tapping Screws - Oval Head, #10 x 5/8" $28.59