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Hex lag screw fasteners, also called lag bolts, are high-strength fasteners typically used in wood construction applications. When you need to fasten wood-to-wood, metal-to-wood, attach objects to wood, or affix items to concrete and masonry, the lag bolt is an ideal choice to combine materials.

Construction Lag Bolts in Bulk

Browse our wide selection of lag screws in various sizes and materials, and order online or request a quote for your next project. For more information and questions, contact our knowledgeable sales staff. Shop Online Below!


For large scale orders, request a quote to receive our best pricing available for your custom order.

Primary Characteristics & Applications for Lag Screws

Lag screws differ from other screws in design and intended application use. Lag screws are large and heavy-duty, featuring coarse threads and a tapered point for driving into wood surfaces. Lag screws can have fully or partially threaded shafts depending on the application requirements. With a larger head size and diameter than typical metal screws, lag screws are designed for load-bearing applications and can attach objects and other materials to wood structures. Common applications for lag bolts include:

  • Structural support for construction applications
  • Securing wood beams, posts, and joists
  • Mounting brackets to walls & ceilings
  • Attaching heavy-duty HVAC components to wood studs or bases
  • Constructing docks & piers in marine applications

Material & Plating Options for Hex Lag Screws

At Fastener Solutions, our ready-to-ship inventory of lag screws includes material and finish options for various application requirements. Our selection includes:

  • 18.8 Stainless Steel: 18.8 Stainless Steel lag screws feature excellent corrosion and rust resistance, making them ideal for outdoor applications.
  • 316 Stainless Steel: 316 Stainless Steel lag screws feature molybdenum for improved corrosion and rust resistance, making them ideal for marine and saltwater applications.
  • Plain Finish A307 Grade A Steel: Plain finish low carbon steel lag screws are strong and reliable, ideal for general-purpose applications in dry, indoor environments.
  • Clear Zinc Plating: Steel hex lag screws with clear zinc plating offer improved corrosion resistance.
  • Hot-Dipped Galvanized Finish: Hot-dipped galvanized lag screws feature enhanced, long-lasting corrosion resistance for applications that require exposure to harsh weather or moisture.

Get Lag Screws that Meet The American Iron and Steel Provision Requirements

The American Iron and Steel Provision mandates that the fastening products used in the construction, alteration, maintenance, and repair of public water systems meet strict specifications. At Fastener Solutions, we distribute American-made AIS-compliant fasteners manufactured to meet The American Iron and Steel Provision requirements. From nuts and bolts to anchors and screws, our AIS-compliant fasteners are available for bulk ordering at competitive prices. If you have DWSRF/CWSRF projects or other applications that require AIS-compliant fasteners, Fastener Solutions has you covered.

Contact us to receive a quote for your application's AIS-compliant fastener needs.

Get Your Hex Lag Bolts & Other Industrial Fasteners from Fastener Solutions

Are you looking for a fastener supplier you can trust? With fast shipping and flexible bulk-ordering options, Fastener Solutions provides fasteners for commercial and industrial customers nationwide. In addition to hex lag screws, we distribute nuts, washers, anchors, and other assorted fasteners in a wide range of premium materials, including Stainless Steel grades, brass, silicon bronze, and more.

Contact Us to Learn More

Contact us to learn how we can supply all your industrial fastener needs. For pricing information on special orders, request a quote online. Fastener Solutions is your one-stop supplier for premium fasteners at competitive prices!