3/8 X 2-1/2 Hex Lag Screw
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3/8 X 2-1/2 Hex Lag Screw
Engineered for robust fastening in wood and other soft materials, the 3/8 x 2-1/2 Hex Lag Screw provides exceptional holding power for construction, framing, and MRO projects. Its hex head allows for high-torque installation with standard tools, while the coarse thread design ensures a secure, lasting grip.
- ASTM A307 Compliant
- Low Carbon Steel
- Hex Head for Wrench/Socket
- Wood Construction & Framing
The 3/8 x 2-1/2 Hex Lag Screw is forged from high-quality low carbon steel, meeting the performance requirements of ASTM A307 standards. This material provides the necessary ductility and strength for heavy-duty wood fastening without risking fracture. The screw features a gimlet point for easy starting and deep, coarse threads that displace wood fibers to create a strong, vibration-resistant connection. Its hexagonal head is designed for optimal torque transfer from a wrench or socket, ensuring a tight and secure assembly in demanding structural applications.
Ideal for both commercial construction and industrial MRO tasks, these hex lag screws are the go-to fastener for attaching heavy materials to wood structures. Common uses include securing ledgers for decking, fastening machine bases to wood floors, and assembling heavy timber frames. Available as part of our comprehensive Los Angeles industrial supply, these screws provide a reliable solution for fabricators, contractors, and maintenance teams who require strong, easy-to-install hardware for their projects. We offer bulk hex lag screws for large-scale jobs.
Specifications
- Material: Low Carbon Steel
- Standards: ASTM A307
- Strength/Tensile: Approx. 60,000 PSI Minimum Tensile Strength (per ASTM A307 Grade A)
- Dimensions: Diameter: 3/8 inch, Length: 2-1/2 inches
- Finish: Zinc Plated (per ASTM B633) or Hot-Dip Galvanized
- Certifications: Mill Test Reports (MTR) available upon request
Applications
- Construction: Securing deck ledgers, framing members, and heavy timber connections.
- Industrial MRO: Anchoring machinery, equipment mounts, and support brackets to wood floors or beams.
- Fabrication: Assembling large wooden crates, pallets, and custom industrial furniture.
- Outdoor Projects: Building retaining walls, fences, and playground equipment (galvanized finish recommended).
Target Users
This industrial-grade hardware is essential for general contractors, framing carpenters, deck builders, and maintenance technicians requiring robust fasteners for structural wood applications.
Finish Options
Our hex lag screws are typically available in a standard zinc-plated finish for moderate corrosion resistance in indoor or dry environments. For superior protection against weather and moisture in outdoor applications, we also offer a hot-dip galvanized (HDG) option. Contact our Los Angeles warehouse for availability.
How to Measure
To specify a hex lag screw, you need two primary measurements: diameter and length. The diameter is the nominal size of the screw's shank (e.g., 3/8"). The length is measured from under the flat bottom of the hex head to the tip of the screw.
Example: To order this product, specify '3/8 x 2-1/2 Hex Lag Screw, Zinc Plated'.
Order Checklist
- Product name and required dimensions (e.g., 3/8 X 2-1/2)
- Grade/material specification and quantity
- Cutting instructions (if applicable)
- Surface finish requirements (e.g., Zinc Plated, Galvanized)
- Certifications required (Mill Test Report - MTR)
- Special handling or delivery requirements
Quick Facts
- Product
- 3/8 X 2-1/2 Hex Lag Screw
- Material
- Low Carbon Steel
- Standards
- ASTM A307
- Key Properties
- Hex head for high torque, coarse threads for wood grip, ASTM A307 strength.
- Primary Applications
- Wood Framing, Deck Construction, MRO
- Location
- Los Angeles warehouse - Same-day pickup available
Available Sizes
We stock a wide range of hex lag screw sizes, with diameters from 1/4" to 3/4" and lengths from 1" to 12". Our Los Angeles warehouse has bulk hex lag screws ready for same-day pickup to keep your project moving.
Custom sizes and cutting services are available.
Contact for Sizing