GRK Fasteners RSS Structural Screw 3/8" x 8" T25 Star Drive

The GRK Fasteners RSS Structural Screw delivers exceptional holding power and faster installation for all your load-bearing connections. Engineered with innovative features like the Zip-Tip self-drilling point and W-Cut thread design, this rugged alloy-steel fastener drives effortlessly into most woods—eliminating the need for pre-drilling and reducing installation torque. Ideal for decks, pergolas, heavy timber framing and other structural projects, it ensures a tight, zero-gap joint every time.

Featuring a corrosion-resistant Yellow Zinc Climatek® coating, these screws are code-approved for use in both interior and exterior applications and meet ground-contact requirements in treated lumber. The T25 Star Drive recess provides superior bit grip and minimizes cam-out, so you can maintain consistent torque and finish your work faster.

Key Features

• Zip-Tip self-drilling point eliminates pre-drilling for one-step installation
• W-Cut low-torque thread draws two substrates together for maximum clamp-up
• Washer-style modified truss head allows zero-gap joints and flush seating
• T25 Star Drive recess reduces cam-out and maximizes bit-to-fastener engagement
• Yellow Zinc Climatek® coating resists corrosion and is approved for ground-contact in treated lumber
• Alloy-steel construction for structural strength and long-term reliability