15 x 3-1/2″ Black T-30 Wafer Head Lag Screw 25/Bucket

Description

Overview

The Big Timber 15 x 3-1/2″ Black T-30 Wafer Head Lag Screw (WTX15312-25) is designed for heavy-duty wood fastening applications in both outdoor and indoor environments, including structural and decorative hardware installations.

Technical Features

• Heat-treated hardened steel construction delivers high tensile strength and high shear strength, making these screws suitable for load-bearing and structural fastening applications.
• T-30 Torx drive handles 2x the torque compared to Phillips or square drive, reducing cam-out risk and extending the usable life of the driver bit.
• Aggressive knurl thread design enlarges the entry hole to reduce wood splitting and minimizes drag during installation, helping to draw lumber tightly together for a secure joint.
• Built-in flat washer head increases pull-through strength while leaving a smooth, flush surface after installation, eliminating the need for a separate washer.
• Ruspert matte black coating provides an ACQ-compatible, corrosion-resistant finish suited for use with pressure-treated lumber as well as outdoor and indoor decorative hardware installations.
• 25-count bucket packaging keeps fasteners organized and accessible on the job site.

Applications

• Structural wood-to-wood fastening requiring high shear and tensile load resistance
• Outdoor decking, fencing, and framing with ACQ pressure-treated lumber
• Indoor and outdoor decorative hardware installation across multiple hardware brands
• Applications where a clean, flush, aesthetically finished fastener head is required
• High-torque power tool driving where bit longevity and cam-out resistance are priorities