Hillman Fasteners 230060 Hex Head Lag Bolt 5/16x3-1/2 Zinc 50pk

Product Description

The HILLMAN FASTENERS 230060 is a zinc-plated hex head lag bolt sized at 5/16 inch diameter by 3-1/2 inches in length, sold in a 50-pack. Lag bolts of this type are heavy-duty wood screws driven with a wrench or socket rather than a screwdriver, making them suitable for structural and load-bearing fastening applications. The zinc plating provides basic corrosion resistance for indoor and sheltered outdoor installations. Each pack contains 50 identical fasteners, supporting larger jobs where consistent hardware is needed.

This lag bolt is appropriate for wood-to-wood and wood-to-structural-member connections in residential and light commercial construction. Common applications include deck framing, ledger board attachment, pergola assembly, fence post hardware, and general carpentry where a strong mechanical connection between lumber members is required. The hex head drive style is preferred by carpenters and general contractors for fast installation with standard socket sets and impact drivers.

Key Features

• Zinc plating for basic corrosion resistance in sheltered environments
• Hex head drive accepts standard sockets and impact wrenches for fast installation
• 5/16 inch diameter provides substantial shear and withdrawal strength in wood framing
• 3-1/2 inch length suits thick lumber connections such as doubled 2x framing and ledger attachments
• 50-pack quantity reduces per-fastener cost on larger projects

Compatibility

Designed as a standard hex head lag bolt for use in wood framing and structural carpentry applications where a 5/16 inch by 3-1/2 inch fastener is specified.

Installation Notes

Lag bolts of this size are typically installed by carpenters, general contractors, or experienced DIYers using a socket wrench or impact driver with the appropriate hex socket. Pre-drilling a pilot hole slightly smaller than the shank diameter is strongly recommended to prevent wood splitting and reduce drive torque. Consult applicable building codes, including the International Building Code, for required fastener schedules in structural connections such as ledger board attachments. Do not overdrive, as this can strip threads in the wood and reduce holding strength.