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, #14 x 2" $45.91 Carriage Bolt, 1/2"-13 x 5" $49.07 Flat Washer, 5/16", .062" Thick, OD 7/8" $52.44 Phillips Tapping Screws - Flat Head, #6 x 1/2" $9.26 Phillips Tapping Screw - Pan Head, #14 x 3" $61.60