Minerallac 57848j Hex Head Lag Screw 1/2 X 3 in Zinc Plated

Product Description

The MINERALLAC 57848j is a hex head lag screw designed for heavy-duty fastening applications in electrical, construction, and trade service work. Manufactured from steel with a zinc-plated finish, this screw measures 1/2 inch in diameter by 3 inches in length and features a 6 TPI thread pattern. The hex head profile accepts standard wrenches and sockets for high-torque installation into wood substrates. The zinc plating provides corrosion resistance in typical indoor and sheltered outdoor environments. Electricians, HVAC installers, and general contractors rely on this fastener for anchoring equipment supports, cable tray hardware, conduit straps, and structural mounting brackets.

This lag screw is suited for residential and light commercial applications where a large-diameter wood-threaded fastener is required. Common install scenarios include securing electrical panel mounting boards, anchoring conduit support structures to wood framing, and attaching equipment rails or brackets to wooden beams and joists. The 3-inch length provides substantial thread engagement in standard dimensional lumber. The 3/4-inch hex head width allows use with common hand and power tools available on most job sites.

Key Features

• 1/2-inch diameter by 3-inch length for deep thread engagement in wood
• 6 TPI coarse thread pattern designed for wood fastening applications
• Hex head with 3/4-inch width accepts standard wrenches and impact drivers
• Zinc-plated steel construction provides corrosion resistance
• Head height of approximately 0.34 inches for low-profile seating against mounting surfaces

Compatibility

Designed as an OEM-style hex lag screw for use in standard 1/2-inch lag screw applications requiring a 6 TPI wood thread and hex drive head.

Installation Notes

Lag screws of this diameter are typically installed by electricians, HVAC technicians, or construction trades using a socket wrench or impact driver. A pilot hole should be drilled prior to installation to prevent wood splitting and ensure proper thread engagement. Follow applicable NEC or local building code requirements for fastener sizing and spacing when used in electrical or structural mounting applications. Do not overtighten, as this can strip the wood substrate or compromise the holding strength of the fastener.

Technical Specifications

• Thread Size: 6 TPI
• Diameter: 1/2 inch
• Length: 3 inches
• Head Type: Hex Head
• Head Width: 3/4 inch
• Head Height: 0.34375 inches
• Material: Steel
• Finish: Zinc Plated
• Head Color: Silver

Standard Information

• Brand: MINERALLAC
• Manufacturer Part Number: 57848j