#15 x 6" WTX Wafer Head Lag Screw 300ct | WTX156

Big Timber WTX Wafer Head Lag Screw

WTX Wafer Head Lag Screws are engineered for structural wood fastening, delivering high pull‑through strength with a built‑in flat washer head and strong driving power from a T‑30 star drive. The black Ruspert coating provides corrosion‑resistant performance and a matte black finish that pairs well with decorative black hardware. Ideal for log construction, timber frames, beams, ledgers, posts, fencing, SIP panels, pole barns, pergolas, and other structural wood applications. Built from durable steel and designed for high‑performance fastening in both exterior and interior environments. Third‑party certified by DRJ under TER 1911‑04.

Replacement for:

• FASTENMASTER FLATLOK STRUCTURAL WOOD SCREW
• FASTENMASTER HEADLOK STRUCTURAL WOOD SCREW
• FASTENMASTER VERSALOK STRUCTURAL WOOD SCREW
• Simpson STRONG‑DRIVE® SDWS TIMBER SCREW
• Simpson OUTDOOR ACCENTS® STRUCTURAL WOOD SCREW

Features:

• Structural wafer head lag screw
• Black Ruspert coating for corrosion resistance
• Built‑in flat washer head for increased pull‑through strength
• T‑30 star drive for torque control
• Type‑17 point for fast starts without pre‑drilling
• Aggressive knurl to reduce splitting and help draw lumber together
• V‑Cut notches for easier insertion at lower torque
• Peak Performance™ lubrication for smoother driving
• DRJ certified under TER 1911‑04

SKU Specifications:

• Drive Size: T‑30
• Diameter: #15
• Screw Length: 6"
• Thread Length: 2‑1/2"
• Point Type: Type‑17 Point
• Quantity: 300
• Weight: 19.9 lbs
• Approx. Screws per lb: 15
• Bit Included: No
• SKU: WTX156
• Inner Pack SKU: WTX156-25

Primary Applications:

• Log construction
• Timber frames
• Laminated beams
• Girders
• Ledger boards
• Stair rails
• Deck posts
• Fencing
• SIP panels
• Pole barns
• Pergolas
• Decorative black hardware

Material: Steel
Product Color: Black
Certification: DRJ Third‑Party Certified (TER 1911‑04)
Prop 65 Warning: This product contains a chemical known to the State of California to cause cancer, or birth defects or other reproductive harm
Ter Numbers: 1907‑04, 1907‑03, 2104‑07

Compatible with treated lumber. For areas within one mile of saltwater, near swimming pools, exposure to corrosive chemicals, or other environments where corrosion is more likely to occur, use the proper size, grade, and type of Big Timber Stainless Steel Fasteners. Stainless available as SCTX. WTX is not available in stainless.