Value Collection 3720LG Hex Head Lag Screw 3/8 in Steel

Product Description

The VALUE COLLECTION 3720LG is a 3/8-inch hex head lag screw designed for heavy-duty fastening applications in construction, structural framing, and mechanical installations. Manufactured from AISI 1006-1022 grade steel with a hot-dipped galvanized finish, this lag screw delivers corrosion resistance suited for exterior and treated-lumber applications. The 1-1/4-inch length under head provides solid thread engagement in wood substrates. It conforms to ASME B18.2.1 dimensional standards, ensuring consistent head geometry and thread form for reliable torque transfer. Licensed tradespeople and experienced contractors rely on this fastener for deck framing, ledger board connections, and equipment-mounting applications where pull-out resistance matters.

This lag screw is well suited for residential and light commercial construction tasks including deck assembly, fence post hardware, structural wood connections, and securing mounting brackets to wood framing. The hot-dipped galvanized coating makes it appropriate for outdoor and pressure-treated lumber environments where bare steel fasteners would corrode prematurely. It is sold individually per package with a minimum order quantity of 100 pieces, making it practical for bulk procurement on active job sites.

Key Features

• 3/8-inch screw diameter for high pull-out and shear load capacity
• 1-1/4-inch length under head for solid thread engagement in wood
• Hot-dipped galvanized finish for corrosion resistance in exterior and treated-lumber use
• Hex head drive for use with standard socket wrenches and impact drivers
• AISI 1006-1022 steel construction meets ASME B18.2.1 dimensional standards

Compatibility

Designed as a standard hex head lag screw conforming to ASME B18.2.1, suitable for use in wood-to-wood and metal-to-wood fastening applications where a 3/8-inch lag screw is specified.

Installation Notes

Lag screws of this type are installed by carpenters, general contractors, and licensed tradespeople using a socket wrench or impact driver with the appropriate hex socket. A pilot hole should be drilled prior to installation to prevent wood splitting and to ease driving; pilot hole diameter and depth should follow applicable building code guidance or the fastener manufacturer's recommendations. When fastening into pressure-treated lumber, confirm the galvanized coating rating meets local code requirements for contact with treated wood. Always follow applicable building codes, including IBC and IRC provisions for structural fastener use.