Online Parts Store › Phillips Machine Screw - Oval Head, 1/4"-20 x 4" Image 1 of 1 Phillips Machine Screw - Oval Head, 1/4"-20 x 4" $55.86 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Square Tapping Screw - Flat Head,#10 x 1-1/4" $48.20 Seachoice 01011 Lock Washer ,5/16" $31.68 Lock Washer, M5 $10.83 Phillips Tapping Screws - Flat Head, #14 x 1" $45.79 Phillips Tapping Screw - Pan Head, #12 x 1" $40.94