Hillman Fasteners 48633 Star Trim Screw 3in X 8

Product Description

The HILLMAN FASTENERS 48633 is a number 8 by 3-inch star drive trim screw built for exterior and interior trim fastening applications. This screw features a sharp point for clean penetration, serrated threads to reduce drive torque, and a coarse thread pattern that delivers strong holding power in wood and composite trim materials. A knurled shank section helps prevent wood splitting on entry. The 6-point star drive system resists cam-out, giving installers consistent, controlled driving from start to finish. Rated at MHR 2000-hour corrosion resistance, this fastener is suited for applications where durability and finish quality matter. Sold in a box of 12 screws per package.

This trim screw is used in residential and light commercial trim installation work, including door and window casing, baseboards, crown molding, and exterior trim boards. The sharp point and four countersinking blades allow the screw to seat flush without pre-drilling in most trim-grade lumber and composite materials. Carpenters, finish trim contractors, and general contractors will find this fastener appropriate for both interior finish work and exterior trim applications where corrosion resistance is a factor.

Key Features

• Serrated threads reduce drive torque for faster, easier installation
• 6-point star drive system eliminates cam-out during driving
• 4 sharp countersinking blades allow flush seating without pre-drilling
• Coarse thread pattern provides optimal holding power in wood and composite trim
• Knurled shank section reduces wood splitting on entry
• MHR 2000-hour corrosion resistance rating for exterior-appropriate durability
• Backed by a lifetime guaranty from the manufacturer

Compatibility

Designed as an OEM-style replacement and general-use trim fastener suitable for wood and composite trim boards in residential and light commercial construction applications.

Installation Notes

Install using a T20 or appropriate 6-point star drive bit rated for the torque demands of trim work. Power down any adjacent live electrical components before fastening near wall openings or junction areas. Drive screws at controlled speed to avoid over-driving and surface damage on finished trim. Follow applicable building codes, including local IRC provisions, for fastener spacing and penetration depth in structural trim assemblies.