#17 x 6″ CTX T-40 Bronze Construction Lag Screws

Big Timber CTX™ #17 x 6″ T-40 Construction Lag Screws

The Stronger, Smarter Lag Screw for Reliable Structural Support

Engineered for demanding structural applications, Big Timber’s CTX™ #17 x 6″ Construction Lag Screws offer unparalleled strength, durability, and ease of installation. Heat-treated and hardened, these screws surpass ordinary lag screws, providing deep-cutting threads for maximum hold and a precision Type 17 tip that ensures fast, smooth starts with minimal “walking.” With a built-in washer head for a sleek, professional finish, these screws are built to perform.

Why Big Timber CTX™ Stands Above the Rest

• Triple-Layer Bronze Coating
  Rated for 1200 hours of corrosion resistance in ACQ and salt spray conditions, the triple coating makes these screws ACQ-compatible and resilient for both interior and exterior projects.
• Superior Holding Power
  With deep, wide threads and an aggressive knurl, these screws draw lumber together securely, minimizing splitting. The T-40 six-lobe star drive reduces cam-out, allowing for smooth, consistent torque and extending the life of your bit.
• Precision Design with Washer Head and Type 17 Tip
  The integrated washer head increases pull-through strength and ensures a flush, clean finish. The Type 17 point enables quick, precise starts without pre-drilling, while under-head cutting nibs allow for self-countersinking.

Built for Heavy-Duty Structural Applications
Perfect for high-stakes structural work, including log construction, timber frames, laminated beams, deck posts, ledger boards, SIP panels, and pole barns, these screws meet the demands of rugged environments. Independently tested and compliant with International Building Code and Residential Code standards, these screws are proven for reliable structural integrity.

Specifications & Available Quantities

• Available Quantities: 1 piece, 25 pieces, 100 pieces, or 250 pieces
• Product Weight: 0.072 lb (single screw), also available in 1 lb, 7 lb, and 19.9 lb bulk options
• Load Capacity: Offers impressive holding power with 0.310″ thread diameter, designed to meet high-torque applications

Big Timber Warranty
Big Timber warrants its products against material and manufacturing defects. If deemed defective, the product will be replaced at no cost. Please note, the warranty does not cover labor or installation costs.

Big Timber CTX™ lag screws are built tough, providing the reliable, professional-grade strength you need for any job, large or small.

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