1/2" x 6" Galvanized Lag Bolts – Hex Head Wood Screws

Super Strong Wood Screws!

These 1/2" x 6" Hex Head Lag Bolts are heavy-duty fasteners designed for wood-to-wood applications where strength and durability matter most. Made from Grade 2 galvanized steel, they offer excellent corrosion resistance thanks to an electro-galvanized zinc coating, making them ideal for interior construction projects. With a coarse 13 TPI thread and a 4.5-inch threaded length, these wood lag screws provide a secure, long-lasting hold—perfect for projects involving heavy wood pieces. The 3/4-inch hex head allows for easy installation using a socket or wrench, and no washer is needed. 

Specs

• Size: 1/2" dia. x 6" L
• Finish: Electro Galvanized (zinc plated)
• Head Style: Hex Head
• Head Diameter: 3/4"
• Threads Per Inch (TPI): 13
• Thread Style: Coarse
• Threaded Length: 4-1/2"
  
• Non-Threaded Length: 1-3/8"
• Grade: 2
• Applications: Interior
• Weight: 0.22 lbs/pc
• Packaging: 25 pcs/bag; 200 pcs/box

Features

• Heavy-Duty Hold – Designed to fasten heavy wood pieces together with superior strength and long-term reliability, much stronger than your typical screw!
• Easy Installation – Use a 3/4" socket or wrench with a 5/16" pilot hole; no washer required.
• Galvanized (Zinc Plated) for Corrosion Resistance – Zinc-plated finish protects against rust in dry, indoor environments.
• Optimized Design – 4.5" of threading delivers strong holding power, while the 1-3/8" unthreaded shank helps pull materials tightly together for a secure, flush fit.
• Interior Woodworking Projects – Great for framing, furniture building, cabinetry, shelving, and general carpentry. Not suitable for ACQ pressure-treated wood or outdoor use.
• Masonry Applications: Must be combined with a lag shield

FAQ

Do I need a pilot hole?

Yes, a 5/16" pilot hole is recommended for easier installation and to prevent wood splitting.

Can I use these with pressure-treated wood?

No, they are not compatible with ACQ pressure-treated lumber.

What tool do I use to install these?

Use a 3/4" socket or wrench—no washer needed.