Hillman Fasteners 48637 Star Drive Trim Screw 2.5x8 5lb

Product Description

The HILLMAN FASTENERS 48637 is a 2.5-inch x #8 coarse-thread trim screw designed for exterior trim and finish fastening applications. Built to a 2000-hour corrosion-resistance rating, this screw is engineered to reduce common installation problems. A 6-point star drive eliminates cam-out during driving, while serrated threads reduce the torque needed to seat the fastener. Four sharp countersinking blades allow the head to seat flush without pre-drilling a countersink. The knurled shank section helps prevent wood splitting at the fastener zone. Sold in a 5-pound box, this screw is a practical bulk option for high-volume trim work.

This trim screw is suited for residential and light commercial exterior applications where corrosion resistance and clean head seating matter. Typical uses include installing fiber cement trim, wood trim boards, fascia, and similar finish materials. The sharp point starts without pre-drilling in most trim stock. The coarse thread provides strong holding power in dimensional lumber and engineered wood substrates. This fastener is commonly installed by carpenters, siding contractors, and general construction crews using a drill-driver or impact driver with a T-20 or compatible star bit.

Key Features

• 2000-hour corrosion resistance rating for exterior use
• 6-point star drive system eliminates cam-out
• Serrated threads reduce drive torque during installation
• 4 sharp countersinking blades seat the head flush without pre-drilling a countersink
• Knurled shank section reduces wood splitting
• Coarse thread for strong holding power in wood substrates
• Sharp point for direct driving into trim stock

Compatibility

Designed as a trim and finish fastener for exterior wood, fiber cement, and engineered wood trim applications requiring a corrosion-resistant, flush-seating screw.

Installation Notes

Installation is performed by carpenters and finish contractors using a drill-driver or impact driver fitted with the appropriate star drive bit. Confirm the correct bit size before driving to avoid damaging the drive recess. Although the sharp point reduces the need for pre-drilling in most trim stock, pilot holes are recommended near board ends to minimize splitting risk. Follow applicable building codes for fastener spacing and penetration depth into structural substrates.