1/4 In. X 6 In. Stainless Steel 304 Hex Drive Hex Head Lag Screw (5-Pack) por | ago 11, 2026Lag Screws are hex head screws with thick shafts and coarse threads. They are designed to securely join wood pieces together in heavy load applications. Lag Screws can also be used in masonry if combined with a lag shield.