Hillman Fasteners 47878 Construction Lag Screws 75 Pack

Product Description

The HILLMAN FASTENERS 47878 is a 75-pack of Power Pro Bronze Ceramic Construction Lag screws designed for heavy-duty fastening in structural and outdoor applications. Each screw measures 5 inches in length by 5/16 inches in diameter and features a Type 17 cut point for easier starts in dense or treated lumber without pre-drilling. The star drive head reduces cam-out during installation. A coarse, serrated thread pattern provides strong pull-through resistance. The bronze ceramic coating is tested to 1500 hours of salt spray resistance, making these lags well-suited for corrosive or exterior environments.

These construction lags are intended for use in residential and light commercial structural fastening applications, including deck framing, ledger board attachment, post connections, and treated lumber assemblies. The corrosion-resistant ceramic coating makes them appropriate for ground-contact-adjacent and coastal installations where standard zinc-coated fasteners would degrade quickly. They are commonly installed by carpenters, deck builders, and general contractors working to current building codes.

Key Features

• Type 17 cut point starts in dense and treated lumber without pilot hole in many applications
• Star drive recess minimizes cam-out and improves torque transfer
• Coarse, serrated thread pattern for high pull-through and withdrawal resistance
• Bronze ceramic coating rated to 1500 hours of salt spray resistance
• Lifetime warranty coverage
• 75 screws per pack for high-volume framing and structural tasks

Compatibility

Designed as OEM-style structural lag screws suitable for use in wood framing, deck construction, and treated lumber fastening applications where corrosion resistance is required.

Installation Notes

Installation is typically performed by carpenters, deck builders, or licensed contractors using a star-bit driver and a heavy-duty impact driver or drill. Always consult applicable building codes, including the IRC or IBC, for required fastener schedules, embedment depths, and spacing in structural connections. Power down and secure the work area before drilling into existing structural members. Do not substitute these fasteners in applications requiring engineer-specified hardware without verification.