Hillman Fasteners 48446 Composite Deck Screw 2.5in X10 5lb

Product Description

The HILLMAN FASTENERS 48446 is a ceramic-coated exterior composite deck screw engineered for fastening composite decking, hardwoods, and treated lumber in outdoor applications. At 2.5 inches long and sized 10, the screw features a self-drilling cut point that eliminates pre-drilling in most composite and wood substrates. The dual-thread design pulls material tight and reduces driving torque. A brown ceramic coating provides corrosion resistance rated to 1500 hours of salt spray testing, making this fastener well-suited for coastal and high-moisture environments. Sold in a 5-pound box, this screw is a practical bulk option for deck builders and exterior framing contractors.

This screw is designed for exterior composite decking installations, including new construction and deck replacement projects. The brown finish blends with common composite decking colors to minimize fastener visibility on the finished surface. The self-drilling point and dual thread make it appropriate for use in composite boards, pressure-treated lumber, and hardwood decking. It is commonly installed by decking contractors, general carpenters, and experienced DIYers working on residential outdoor structures. The star drive recess reduces cam-out during high-volume driving, which is important when fastening full deck runs.

Key Features

• Self-drilling cut point eliminates pre-drilling in composite and wood substrates
• Dual-thread design reduces driving torque and pulls material tight
• Brown ceramic coating rated to 1500 hours of salt spray resistance
• Star drive recess minimizes cam-out during extended driving
• Lifetime warranty included
• Bulk 5-pound box format reduces per-fastener cost on large deck projects

Compatibility

Designed for use with exterior composite decking boards, pressure-treated lumber, and hardwood decking in outdoor structural applications.

Installation Notes

Installation is performed by decking contractors or carpenters using a power driver with the appropriate star drive bit. Always confirm the composite decking manufacturer's recommended fastener type and spacing before installation. Avoid overdriving, as ceramic coatings can crack if the screw head is countersunk excessively. Follow local building codes for deck fastener spacing and structural load requirements.