Lag Screws

Lag Screws (also known as lag bolts) are the go-to heavy-duty fasteners for assembling timber projects where nails simply aren't strong enough. With their coarse threads and sharp, tapered points, these screws bite deep into wood for exceptional pull-out resistance—ideal for securing brackets to beams, joining heavy timbers, mounting post bases, or building barn doors, pergolas, and reclaimed furniture. At Cutting Edge Metals, we stock premium lag screws designed to pair perfectly with our custom timber brackets, beam connectors, and other metalwork. Choose from two popular styles to match your project's needs: practical hex head for easy installation and value, or decorative square head for that authentic rustic, "old timey" forged look. 

Our Lag Screw Options:

  • Hex Head Lag Screws
    Cost-effective and reliable—these are the workhorses of timber fastening. Zinc-plated finish provides solid corrosion resistance for general or semi-exposed use, while the hex head allows high-torque driving with standard wrenches or our hex head sockets. Great for clean, professional results when appearance is secondary to strength.
  • Square Head Lag Screws
    Rustic and decorative—these add vintage charm with their classic square heads and options like black oxide finish for a matte, aged-iron aesthetic or unfinished plain steel for natural patina development. Perfect for visible, exposed applications where hardware becomes part of the design.

Key Features & Benefits Across Both Styles:

  • Superior Strength — Coarse threads and pointed tips ensure deep, secure grip in wood—far better than standard screws for structural loads.
  • Finish Flexibility — Zinc plated for protection and affordability; unfinished plain steel for raw industrial/rustic patina; black oxide for timeless forged style.
  • Perfect Compatibility — Sized to fit our timber brackets, joist hangers, post bases, and other hardware—no mismatches or weak points.
  • Easy Installation — Hex or square heads pair with our sockets for fast, slip-free driving; add washers for surface protection.
  • Builder-Quality — Consistent, high-grade steel that holds strong and lasts, elevating your craftsmanship.

Browse below or use the links to explore hex head and square head variants, view sizes/finishes, and add to your cart. Pair them with our brackets for a complete kit, or contact us for custom recommendations. Bulk options available for pros and large projects. Your timber build deserves fasteners that perform reliably and look intentional—shop lag screws from Cutting Edge Metals today and get fast shipping straight to your site!