Online Parts Store › Phillips Machine Screw - Oval Head, 1/4"-20 x 6" Image 1 of 1 Phillips Machine Screw - Oval Head, 1/4"-20 x 6" $47.93 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Phillips Tapping Screws - Flat Head, #6 x 1-1/2" $16.94 Square Tapping Screw - Oval Head #8 x 3/4" $25.25 Phillips Tapping Screws - Oval Head, #10 x 2" $27.33 Nylon Flat Washer 3/8", 0.62" Thick, OD 1" $57.19 Flat Washer, 1/2", .078" Thick, OD 1-3/8" $74.51