GRK Fasteners R4™ Multipurpose Screw #10 x 3-1/2″ Handy Pack

GRK’s R4™ Multipurpose Screws combine professional-grade performance with ease of use in a convenient 50-count Handy Pak. Crafted from premium alloy steel and finished with Climatek® corrosion-resistant coating in Gold, these self-tapping fasteners require no pre-drilling and deliver a flawless finish every time. The innovative Zip-Tip® point and Fast Bite Tip design power through wood, composite decking, plastic, sheet metal and more—transporting drill dust away while preventing splitting and fiber damage under the head. Ideal for both interior and exterior framing, decking, fencing, and remodeling projects.

Whether you’re a contractor or a serious DIYer, the R4’s Star Drive Torx head offers precision fit with GRK bits for maximum control and reduced cam-out. The W-Cut threads lower installation torque for faster driving, while the bugle-style head self-countersinks cleanly, sealing the hole without cracking. Backed by ESR-3201 approval for structural applications, these #10 × 3-1/2″ screws deliver reliability and strength where it matters most.

Key Features

• Ideal for multipurpose wood-to-wood framing and exterior structures
• For both interior and exterior use in wood, composite, plastic, sheet metal and cement fiberboard
• Fast Bite Tip provides rapid, one-step installation without pre-drilling
• Zip-Tip® point and saw-blade under-head cutting pockets evacuate debris and reduce splitting
• Fully threaded W-Cut design lowers torque and improves drive speed
• Star Drive Torx head ensures precise bit engagement and minimal cam-out