Online Parts Store › Phillips Machine Screw - Oval Head, 5/16"-18 x 2" Image 1 of 1 Phillips Machine Screw - Oval Head, 5/16"-18 x 2" $45.66 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 Stainless Cotter Pin 5/32" x 1-1/4" $33.25 Seachoice 01007 Lock Washer, #10 $10.77 Carriage Bolt, 1/2"-13 x 3" $92.78 Phillips Tapping Screws - Oval Head, #10 x 1-1/4" $28.85