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 3/4" $19.21 Square Tapping Screw - Oval Head #8 x 1" $32.17 Phillips Tapping Screw - Pan Head, #8 x 1-1/4" $27.71 Phillips Tapping Screw - Pan Head, #10 x 2-1/2" $37.66 Phillips Tapping Screws - Flat Head, #8 x 1" $18.01