Value Collection 3GBL9050408 Hex Head Lag Screw 5/16 in

Product Description

The VALUE COLLECTION 3GBL9050408 is a hex head lag screw designed for structural and general fastening applications in construction, HVAC equipment mounting, and trade installations. Manufactured from AISI 1006 low-carbon steel with a hot dipped galvanized finish, this screw offers corrosion resistance suited for outdoor and high-moisture environments. It measures 5/16 inches in diameter with a 4-1/2 inches length under head, providing substantial pull-through resistance in wood substrates. The hex head drive allows installation with standard socket wrenches or impact drivers. This fastener meets ASME B18.2.1 dimensional standards, making it a reliable choice for code-conscious tradespeople working on equipment pads, structural lumber connections, and framing tie-downs.

This lag screw is commonly used in residential and light commercial construction for securing wood framing members, mounting equipment supports, and anchoring structural brackets. HVAC technicians, electricians, and plumbers rely on lag screws of this size when fastening equipment curbs, mounting boards, and utility supports to wood structures. The 5/16 inches diameter and 4-1/2 inches under-head length make it appropriate for medium-duty fastening tasks where both penetration depth and holding strength matter.

Key Features

• Hot dipped galvanized finish for corrosion resistance in exterior and moisture-prone environments
• AISI 1006 low-carbon steel construction for consistent strength and workability
• Hex head drive compatible with standard socket wrenches and impact drivers
• Meets ASME B18.2.1 dimensional standards for reliable fitment in code-compliant installations
• 5/16 inches diameter with 4-1/2 inches length under head for medium-duty structural fastening

Compatibility

Designed as a standard hex head lag screw for use in wood substrates across residential and light commercial construction and trade installations where a 5/16 inches hot dipped galvanized lag screw meeting ASME B18.2.1 is specified.

Installation Notes

Lag screws of this type are installed by licensed contractors, carpenters, and trade professionals using a socket wrench or impact driver sized to the hex head. Always drill a properly sized pilot hole in the wood substrate before driving to prevent splitting and ensure full thread engagement. De-energize and lock out any nearby electrical equipment before working in the installation area. Follow applicable building codes and manufacturer guidelines for fastener spacing and embedment depth.