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, #12 x 1-1/2" $30.92 Phillips Tapping Screws - Flat Head, #14 x 1-1/2" $28.97 Flat Washer, #4, .032" Thick, OD 5/16" $6.74 Phillips Tapping Screws - Flat Head, #6 x 5/8" $9.57 Seachoice 01533 Hex Nut, 1/2-13 $66.78