8 x 1-1/2 Big T Multi-Purpose Screws, Y Zinc, Flat Head, Star, Qty:192

8 x 1-1/2 in. Big Timber Flat-Head Multi-Purpose Screws - Qty:192

Big Timber Multi-Purpose Screws are engineered for reliable fastening in demanding wood construction applications. Featuring heat-treated hardened steel, an aggressive thread design, and a gold zinc finish, these flat-head screws deliver high tensile strength, high shear strength, and excellent withdrawal resistance. The deep six-lobe star drive, Type-17 cutting tip, and specialized thread features help provide faster installation, reduced driving effort, and dependable holding power.

The gold zinc coating is intended for interior wood construction applications. All zinc and yellow zinc products use a trivalent zinc finish and are RoHS-compliant.

Features and Benefits

• Heat-Treated Hardened Steel: Provides high tensile and shear strength for demanding wood fastening applications.
• Gold Zinc Finish: Offers a durable finish designed for interior wood construction.
• Deep Six-Lobe Star Drive: Helps reduce cam-out and improves driver engagement during installation.
• High-Torque Performance: The star drive design supports up to twice the torque of Phillips or square-drive screws, helping extend driver bit life when properly matched and used.
• Under-Head Cutting Nibs: Help the flat head countersink into the wood for a cleaner, more finished appearance.
• Aggressive Knurl: Helps enlarge the hole beneath the head, reducing friction, drag, and the risk of wood splitting while drawing lumber together.
• V-Cut Thread Notches: Cut through wood fibers to reduce driving torque and make installation easier.
• Type-17 Cutting Tip: Promotes fast, accurate starting and helps prevent the screw from walking across the work surface.
• Reduced Pre-Drilling: The cutting tip and thread design allow easier installation without pre-drilling in many suitable wood applications. Pilot holes may still be necessary depending on the wood species, material thickness, and installation conditions.
• Aggressive Thread Design: Provides strong engagement and excellent withdrawal resistance for secure wood-to-wood fastening.
• Code Compliance: Structural wood screw performance is supported by certified independent testing under TER 1911-01 and is designed to meet applicable International Building Code (IBC) and International Residential Code (IRC) requirements. Verify that the specific application meets the applicable evaluation report and code requirements.
• RoHS-Compliant Finish: Manufactured with a trivalent zinc finish in accordance with RoHS requirements for zinc and yellow zinc products.

Common Applications

Big Timber Multi-Purpose Screws are suitable for a variety of interior wood construction and structural fastening projects, including:

• Log construction
• Timber framing
• Laminated beams
• Girders and heavy wood assemblies
• Ledger boards
• Stair rails
• Deck posts in appropriate interior or protected applications
• Fencing in suitable applications
• Structural insulated panels (SIP panels)
• Pole barns and post-frame construction

Product Specifications

• Screw Size: #8 x 1-1/2 in.
• Head Style: Flat head with under-head cutting nibs
• Drive Type: Six-lobe star drive
• Material: Heat-treated hardened steel
• Finish: Gold zinc
• Intended Use: Interior wood construction
• Compliance: RoHS-compliant finish; structural performance documentation applies as specified in the applicable evaluation report

Installation Note: Always follow the lumber manufacturer's recommendations and applicable building codes. Select the appropriate screw length and installation method for the materials and loads involved. The gold zinc finish is intended for interior use and should not be assumed suitable for exterior, marine, or corrosive environments.