Online Parts Store › Phillips Machine Screw - Pan Head. 5/16"-18 x 2" Image 1 of 1 Phillips Machine Screw - Pan Head. 5/16"-18 x 2" $53.09 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Phillips Tapping Screw - Pan Head, #8 x 1/2" $13.86 Phillips Tapping Screw - Pan Head, #10 x 3" $37.54 Stainless Fender Washer 5/16", .078" Thick, OD 1-1/2 $54.04 Stainless Cotter Pin 1/8" x 1" $63.67 Phillips Tapping Screws - Flat Head, #12 x 3" $42.89