Manufactured to be extremely sturdy, lag screws are some of the toughest fasteners. This Stainless Steel Hex Lag Screws offers a higher level of corrosion resistance, and is great for any outdoor project. Use this lag screw to attach objects to wood and concrete. Common applications include retaining walls, deck frames, and outdoor play equipment. When used in conjunction with a lag shield, this screw can also be used in masonry applications. This screw has coarse threads with a hexagonal drive. Its BEST-IN-CLASS CORROSION PROTECTION: Stainless steel finish combines a polished look with superior protection against rust and corrosion and makes it slightly stronger than regular (un-hardened) steel bolts. Use this screw in a pre-drilled hole; see product package for pre-drilling instructions.