15 x 3-1/2" Bronze T-30 Lag Screw 25/Bucket
by Gap Power
SKU CTX15312-25
Sold out
Original price
$17.00
-
Original price
$17.00
Original price
$17.00
$17.00
$17.00
-
$17.00
Current price
$17.00
In-Store Availability
Stock Status:
Limited Stock (1-2?)
Location:
Aisle 14
Aisle View
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In-Store Only — Visit us in Gap, PA to purchase
Overview
The Big Timber 15 x 3-1/2" Bronze T-30 Lag Screw (CTX15312-25) is designed for structural construction fastening applications in exterior and interior environments, offering ACQ-compatible corrosion resistance and high-torque drive performance.
| Specification | Value |
|---|---|
| MPN | CTX15312-25 |
| Brand | Big Timber |
| Gauge | No. 15 |
| Length | 3-1/2 in. |
| Head Type | Round Head |
| Head Diameter | 0.620 in. |
| Shank Diameter | 0.202 in. |
| Thread Diameter | 0.275 in. |
| Thread Length | 2.6 in. |
| Thread Type | Standard |
| Drive Style | T-30 Six-Lobe Star (Torx) |
| Recess Size | T-30 |
| Material | Heat-Treated Hardened Steel |
| Finish | Triple Layer ACQ-Compatible Bronze Coating |
| Tip Type | Type 17 |
| Indoor / Outdoor | Indoor & Outdoor |
| Package Quantity | 25 per bucket (1 lb container) |
| Driver Bit Included | Yes |
| Package Weight | 1.06 lb |
| Compliance | International Building Code (IBC) & International Residential Code (IRC) |
Technical Features
- Heat-treated hardened steel construction — delivers high tensile strength and high shear strength for demanding structural fastening loads.
- Triple layer ACQ-compatible bronze coating — resists corrosion in treated lumber environments, making these screws suitable for exterior decking, framing, and interior applications.
- T-30 deep six-lobe star drive recess — reduces cam-out under end load and handles twice the torque of Phillips or Square drive profiles, extending bit service life.
- Aggressive knurl on shank — enlarges the entry hole to reduce wood splitting and driving drag, actively drawing lumber together for tighter joint connections.
- Type 17 self-drilling tip — enables faster, precise starts that eliminate bit walking and allow easier insertion without pre-drilling in most applications.
- T-30 driver bit included — provides immediate job-site usability without requiring a separate bit purchase.
- IBC and IRC compliant — meets international building and residential code requirements, supporting use in permitted structural applications.
Applications
- Exterior deck framing and decking board fastening where ACQ pressure-treated lumber is used.
- Structural wood-to-wood connections in residential and light commercial framing.
- Ledger board attachment, joist hanger supplementation, and general construction assembly.
- Interior structural fastening where high shear and tensile load capacity is required.
- Projects requiring code-compliant fasteners under IBC or IRC jurisdiction.