GRK Fasteners R4™ Multipurpose Screw #10 x 2-1/2″ ProPak

GRK R4™ Multipurpose Screws combine innovative cutting geometry and self-countersinking technology to deliver fast, precise fastening in a wide range of materials. The unique underhead saw-blade teeth and integrated cutting pockets evacuate debris as the screw drives, leaving a clean, crack-free finish without pre-drilling. Backed by GRK’s Climatek® corrosion-resistant coating, these #10 x 2-1/2″ screws perform equally well indoors or out and in pressure-treated lumber.

Ideal for everything from wood-to-wood framing and composite decking to plastic, sheet metal, cement fiberboard, and melamine, R4™ screws ensure low-torque installation, reduced cam-out, and structural approval for demanding applications.

Key Features

• Ideal for multipurpose wood-to-wood framing
• Suitable for interior and exterior use
• Zip-Tip® point eliminates pre-drilling for one-step installation
• Fast Bite Tip® provides rapid engagement and reduced walking
• W-Cut thread profile delivers low-torque, high-pullout performance
• Fully threaded, self-tapping design with aggressive threads