Online Parts Store › Phillips Machine Screw - Oval Head, 1/4"-20 x 3-1/2" Image 1 of 1 Phillips Machine Screw - Oval Head, 1/4"-20 x 3-1/2" $50.70 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Stainless Cotter Pin 1/16" x 1" $17.13 Phillips Tapping Screws - Flat Head, #4 x 3/4" $13.73 Seachoice 01011 Lock Washer ,5/16" $31.68 Seachoice 01009 Lock Washer, 1/4" $13.60 Phillips Tapping Screw - Pan Head, #10 x 2" $24.88