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 Square Tapping Screw - Flat Head,#8 x 1" $27.12 Phillips Tapping Screws - Flat Head, #14 x 3" $59.58 Phillips Tapping Screws - Flat Head, #6 x 1-1/4" $15.93 Phillips Tapping Screw - Pan Head, #8 x 1-1/2" $25.70 Seachoice 01011 Lock Washer ,5/16" $31.68