U2 Construction Lag Screw 5/16" 2 1/2" single

The Ultimate Structural Fastener. Engineered to replace old-school lag bolts with superior speed and strength.

This is the next generation of code-compliant fastening for deck framing, ledger boards, post connections, and heavy-duty timber construction.

1. Lag Bolt Replacement: Engineered for strength, yet installs significantly faster with no pre-drilling required in most applications, saving you time and battery life.
2. Maximum Holding Power: Features the Dome Head with Talon Grip™—nibs under the head interlock with wood, resisting loosening and delivering superior pull-through capacity.
3. One-Hand Driving: The Tight Star Recess system securely grips the T-30 bit, enabling easy, stable, one-hand installation with zero stripping or cam-out.
4. Effortless Penetration: The Tapper Point has a Cork Screw Start and Blade Cutting Thread for pinpoint placement and reduced driving torque, alleviating strain on your tools.
5. Corrosion Resistance: Protected by a Chrome 6 Free Coating (U-Gold or proprietary black), this screw is ACQ pressure-treated lumber compatible and certified for use in ground contact.

If you aren’t happy with what you’ve purchased from TUDS, you may return it to us in like-new condition within 60 days of purchase and we’ll process a refund for the full purchase price of the item(s) being returned.

*Refunds are issued for the full purchase price; return shipping costs are not included.