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 Phillips Tapping Screw - Pan Head, #10 x 3/4" $32.06 Phillips Tapping Screws - Oval Head, #12 x 3/4" $33.07 Seachoice Hex Nut, 5/16-24 $58.82 Nylon Insert Locknut - Stainless 5/16-24 $46.35 Flat Washer, 5/16", .062" Thick, OD 9/16" (A/N Style) $10.20