Online Parts Store › Phillips Machine Screw - Pan Head. 5/16"-18 x 3/4" Image 1 of 1 Phillips Machine Screw - Pan Head. 5/16"-18 x 3/4" $24.06 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Lock Washer, 7/16" $32.06 Phillips Tapping Screw - Pan Head, #14 x 1" $55.11 Nylon Flat Washer #6, 0.32" Thick, OD 3/8" $17.45 Phillips Tapping Screw - Truss Head #8 x 3/4" $17.19 Phillips Tapping Screw - Pan Head, #8 x 3/4" $19.21