#15 x 6" USA Bronze CTX Construction Lag Screw 300ct | CTX156-USA
Details
Big Timber CTX Construction Lag Screw
MADE IN USA — Premium domestic‑manufactured construction lag screw
CTX Construction Lag Screws are built for heavy‑duty structural wood fastening, offering strong driving power with a round washer head and fast starts from a Type‑17 point. The 3X Bronze coating provides long‑lasting exterior protection and is fully ACQ compatible for pressure‑treated lumber. Ideal for log homes, timber frames, beams, ledgers, posts, fencing, SIP panels, pole barns, and general structural wood connections. Manufactured in the USA for superior consistency, quality, and reliability in demanding construction applications.
Replacement for:
- GRK RSS RUGGED STRUCTURAL SCREW
Features:
- USA‑made structural construction lag screw
- 3X Bronze coating for exterior or interior use
- Round washer head for increased pull‑through strength
- Type‑17 point with V‑Cut notches and aggressive knurl
- Peak Performance™ lubrication for smoother driving
- DRJ certified under TER 1907‑01
- IBC and IRC compliant
SKU Specifications:
- Drive Size: T‑30
- Diameter: #15
- Screw Length: 6"
- Thread Length: 3"
- Point Type: Type‑17 Point
- Quantity: 300
- Weight: 18.9 lbs
- Approx. Screws per lb: 15
- Bit Included: No
- Country of Origin: USA
Primary Applications:
- Log construction
- Timber frames
- Laminated beams
- Girders
- Ledger boards
- Stair rails
- Deck posts
- Fencing
- SIP panels
- Pole barns
- Structural wood connections
Material: Steel
Product Color: Bronze
Certification: DRJ Third‑Party Certified (TER 1907‑01)
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: 1907‑01, 2104‑04, 1907‑04, 1907‑03, 1911‑05
Big Timber CTX Construction Lag Screws are 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.






