Green exterior screw - 6-lobed, star drive provides quick bit engagement and greater torque control. Countersinking bugle head prevents heads from popping out and leaves smooth finish. Extra coarse thread. Type 17 point. Features PrimeGuard Plus proprietary polymer coating that protects the fastener against corrosive elements. Use on decks, fencing, siding and other general exterior projects. Ideal for use with pressure treated lumber, cedar and redwood. Cedar and redwood have the possibility to streak or stain when used with any coated fastener. Stainless Steel fasteners are highly recommended for those species of wood. Package counts are approximate.