5/16" X 4" HEX LAG SCREW, ZINC PLATED
| Weight | 0.062500 |
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5/16" X 4" HEX LAG SCREW, ZINC PLATED
Engineered for strong, reliable wood connections, this 5/16" x 4" Hex Lag Screw features a zinc-plated finish for enhanced corrosion resistance. Its hex head allows for high-torque installation, making it a staple for construction, framing, and MRO projects in the Los Angeles area.
- Low Carbon Steel
- Conforms to ASTM A307
- Zinc Plated (ASTM B633)
- Hex Head for High Torque
This industrial-grade hex lag screw is forged from low carbon steel, providing the durability required for demanding wood-fastening applications. It is manufactured to meet the performance requirements of ASTM A307 for light-duty fasteners, ensuring consistent quality and reliability. The screw is coated with a layer of zinc plating according to ASTM B633 standards, which creates a protective barrier against moisture and corrosion, extending the fastener's service life in various environmental conditions. The coarse thread design provides excellent grip and pull-out resistance in wood and similar materials.
Designed for heavy-duty wood construction, these 5/16" x 4" hex lag screws are the preferred choice for fastening ledger boards, deck frames, and other structural wood components. The hex head is easily driven with a standard wrench or socket, allowing for controlled, high-torque application. They are widely used by contractors and fabricators for both new construction and MRO (Maintenance, Repair, and Operations) tasks. Bobco Metals stocks these essential fasteners for same-day pickup at our Los Angeles warehouse, supporting time-sensitive projects.
Specifications
- Material: Low Carbon Steel
- Standards: ASTM A307, ASTM B633 (for Zinc Plating)
- Strength/Tensile: Approx. 60,000 psi minimum (similar to Grade 2)
- Dimensions: Diameter: 5/16", Length: 4"
- Finish: Zinc Plated
- Certifications: Mill Test Reports (MTR) available upon request
Applications
- Construction: Attaching ledger boards, framing decks and docks, securing beams.
- Fabrication: Assembling heavy-duty wooden crates, pallets, and custom structures.
- MRO: Repairing wooden structures, machinery skids, and industrial equipment mounts.
- Landscaping: Building retaining walls, pergolas, and outdoor play structures.
Target Users
This product is essential for general contractors, framing carpenters, deck builders, and MRO technicians who require a strong, reliable fastener for wood-to-wood or metal-to-wood connections.
Finish Options
This hex lag screw comes with a standard zinc-plated finish for good corrosion resistance in typical indoor and outdoor environments. For projects requiring enhanced protection against harsh weather or treated lumber, hot-dip galvanized and stainless steel options may be available via special order. Contact our Los Angeles team for availability.
How to Measure
Lag screws are measured by their diameter (shank thickness) and length. The length is measured from the underside of the hex head to the tip of the screw. Ensure you select a length that provides sufficient embedment into the base material for optimal holding power.
Example: To order this specific product, specify "5/16 inch diameter by 4 inch length Hex Lag Screw, Zinc Plated".
Order Checklist
- Product name and required dimensions
- Grade/material specification and quantity
- Cutting instructions (if applicable)
- Surface finish requirements
- Certifications required (Mill Test Report - MTR)
- Special handling or delivery requirements
Quick Facts
- Product
- 5/16" X 4" HEX LAG SCREW, ZINC PLATED
- Material
- Low Carbon Steel
- Standards
- ASTM A307
- Key Properties
- Zinc plated for corrosion resistance, hex head for high-torque installation, coarse threads for wood.
- Primary Applications
- Wood Construction, Framing, Deck Building, MRO
- Location
- Los Angeles warehouse - Same-day pickup available
Available Sizes
Bobco Metals stocks a wide range of hex lag screw sizes, with diameters from 1/4" to 3/4" and lengths from 1" to 12". Bulk quantities of industrial-grade lag screws are available for immediate pickup at our Los Angeles warehouse.
Custom sizes and cutting services are available.
Contact for Sizing-
5/16" X 4" HEX LAG SCREW, ZINC PLATED$0.59
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