3/8 x 2-1/2 Hex Lag Screws - Galvanized Box/50

Overview

The 3/8 x 2-1/2 Hex Lag Screws - Galvanized Box/50 (05580) is designed for hardware fastening applications requiring secure heavy-load connections between timber, wood, masonry, and concrete.

Technical Features

• Hexagonal head drive: Accepts a standard wrench or socket, allowing high-torque installation without head cam-out — critical for driving large-diameter fasteners into dense material.
• 3/8 in. diameter x 2-1/2 in. length: A heavy-duty shank diameter delivers the shear and withdrawal strength required for structural timber connections.
• Galvanized finish: A zinc-based galvanized coating provides corrosion resistance, making these fasteners suitable for treated lumber and outdoor or moisture-exposed environments.
• Lag screw thread form: Coarse, tapered threads are designed to bite deeply into wood fibers, creating a strong mechanical hold when fastening heavy timbers or wood to masonry and concrete.
• Box of 50: Sold in a 50-piece box (6.19 lb total), providing a practical job-site quantity for framing and structural projects.

Applications

• Fastening heavy timber-to-timber connections in framing, decking, and structural assemblies.
• Securing wood members to masonry or concrete substrates where bolted connections are required.
• Outdoor and exposed construction applications where corrosion resistance is necessary due to the galvanized coating.
• General heavy-duty wood fastening tasks requiring a large-diameter, high-holding-strength screw.