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 Seachoice 18-8 Stainless Steel Wing Nuts, 5/16-18 Size, Pack of 50 $101.59 Phillips Tapping Screw - Truss Head #10 x 1" $33.32 Stainless Countersunk Finishing Washer, #10 $14.99 Phillips Self Drilling Screw - Pan Head #10 x 3/4" $36.40 Square Tapping Screw - Flat Head,#10 x 2" $31.61