Hillman Fasteners 48641 Ss Star Trim Screw 2.5in No.8

Product Description

The HILLMAN FASTENERS 48641 is a No. 8 by 2.5 inch stainless steel star drive trim screw designed for exterior and interior trim applications where corrosion resistance and clean installation are priorities. The screw uses a 6-point star drive system that eliminates cam-out during installation, and serrated threads reduce drive torque for faster seating. Four sharp countersinking blades allow the screw to self-countersink without pre-drilling in most trim materials. A knurled shank section helps prevent wood splitting at the fastening point. Suitable for installation by carpenters, trim contractors, and general tradespeople working with wood, composite, or PVC trim stock.

This trim screw is suited for residential and light commercial trim work including door casing, window trim, baseboards, crown molding, and exterior fascia boards. The coarse thread pattern provides strong holding power in wood and wood-composite materials. The stainless steel construction makes it appropriate for exterior installations where exposure to moisture would cause standard steel fasteners to corrode and stain surrounding material. Sold in a box quantity of 12 screws.

Key Features

• 6-point star drive system eliminates cam-out for cleaner, faster installation
• Serrated threads reduce drive torque and speed up seating
• 4 sharp countersinking blades allow self-countersinking without pre-drilling
• Knurled shank section reduces splitting risk in trim lumber and composites
• Coarse thread pattern for optimal holding power in wood and wood-composite
• Stainless steel construction resists corrosion in exterior and high-moisture environments
• Backed by a lifetime guaranty from the manufacturer

Compatibility

Designed as a general-purpose trim fastener compatible with wood, wood-composite, and PVC trim materials requiring a No. 8 coarse-thread screw with a countersinking profile.

Installation Notes

Installation is performed with a T20 or equivalent 6-point star drive bit. In dense hardwoods or thick composite trim, pilot holes are recommended to prevent material cracking despite the knurled splitting-prevention feature. For exterior applications, verify that all adjacent materials are compatible with stainless steel to avoid galvanic corrosion at contact points. Follow applicable building code requirements for fastener spacing and penetration depth in structural trim assemblies.