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 Phillips Tapping Screw - Pan Head, #12 x 3/4" $37.60 Square Tapping Screw - Flat Head,#10 x 1-1/2" $62.54 Phillips Wood Screw - Flat Head, #8 x 3/4" $43.08 Flat Washer, 5/16", .062" Thick, OD 7/8" $21.67 Phillips Tapping Screw - Pan Head, #14 x 1-1/4" $33.19