Fasteners
Screws
FastenMaster
$15-$60 per boxTimber Screws: The Faster Lag Bolt Alternative
Timber screws are heavy-duty structural fasteners designed to replace lag bolts in beam, post, and ledger board connections. Self-drilling tips and aggressive threads eliminate pre-drilling and install in a fraction of the time with a standard drill.
Key Features
- No pre-drilling required
- Replaces lag bolts in most applications
- Self-drilling tip and aggressive threads
- Installs with standard drill/driver
- Code-listed structural fastener (ICC-ES)
Specifications
Material: Hardened carbon steel with coating | Diameters: 0.195in to 0.220in | Lengths: 2-1/2in to 12in | Drive: Star/Torx | Code: ICC-ES ESR evaluated
Best For
Ledger board attachment
Beam-to-post connections
Rafter-to-beam connections
Deck framing
Compatible Materials
Dimensional lumber
Pressure-treated lumber
LVL and glulam beams
Timber posts
Pros & Cons
Pros
- ✓ Dramatically faster than lag bolts
- ✓ No pre-drilling saves time
- ✓ One-person installation
- ✓ Code-approved structural values
Cons
- ✗ Higher per-unit cost than lag bolts
- ✗ Proprietary drive bit required
- ✗ Limited diameter options vs lags
Installation Tips
Drive with a high-torque drill or impact driver. For ledger boards, install in a staggered pattern per code spacing. Ensure minimum 1-1/2 inch penetration into receiving member.
Frequently Asked Questions
Yes, in most applications. FastenMaster TimberLOK is ICC-ES evaluated as a lag bolt replacement with published structural values.
No. Self-drilling tips cut through dimensional and treated lumber without pilot holes.