The Simpson TP312 3-1/8 in. x 12 in. Galvanized Tie Plate is a reliable, straightforward connector from Simpson Strong-Tie built to splice and reinforce flat wood-to-wood joints across a wide range of light repair and structural reinforcement applications. Stamped from 20-gauge steel and finished with a G90 zinc galvanized coating, this flat strap connector delivers a simple yet dependable solution wherever flat lumber members need to be joined, spliced end-to-end, or reinforced on the surface.

Key Features

• Versatile wood-to-wood connection design - handles splicing flat members as well as miscellaneous wood connections, making it practical across a broad range of projects without needing a specialized connector for each task
• Optimized for flat member reinforcement - engineered specifically for use on the flat face of lumber, ensuring full surface contact and consistent load transfer for flat wood-to-wood applications
• Staggered nail pattern - distributes fastener load across the wood member so the connection stays secure while reducing the risk of splitting the lumber during installation
• 20-gauge steel construction - provides a balance of strength and workability that suits both light repairs and heavier reinforcement tasks without adding unnecessary bulk
• G90 zinc galvanized coating - offers extra corrosion resistance compared to lighter galvanized finishes, making this tie plate a dependable choice where moisture exposure is a concern

Why This Product

• Ready to install with common fasteners - the TP312 is compatible with 0.131 in. x 2-1/2 in. nails, 0.131 in. x 1-1/2 in. nails, or #9 Strong-Drive SD screws, so there is no need to source specialty hardware before getting to work
• Built for long-term performance in demanding conditions - the G90 galvanized finish adds meaningful corrosion protection that helps the connector hold up over time in environments where bare steel would degrade quickly
• Engineered to protect the lumber as well as join it - the staggered nail pattern is a deliberate design choice that keeps the wood from splitting under fastener load, protecting both the connector's holding power and the integrity of the lumber
• A trusted connector line with proven versatility - Simpson Strong-Tie straps and plates are designed to join and reinforce connections with simple, versatile solutions, and the TP312 reflects that same approach by covering splicing, flat reinforcement, light repairs, and heavier structural work in one compact plate

Specifications

• Model Number: TP312
• Width: 3-1/8 in.
• Length: 12 in.
• Gauge: 20
• Coating: Zinc Galvanized, G90
• Finish: Zinc Galvanized, G90
• Install With: (54) 0.131 in. x 2-1/2 in. nails, 0.131 in. x 1-1/2 in. nails or #9 Strong-Drive SD screws
• Country of Origin: United States

Approved Applications

• Splicing flat wood members end-to-end
• Reinforcing wood-to-wood connections on flat surfaces
• Light repairs and miscellaneous wood connections
• Heavy-duty structural reinforcement projects requiring a flat strap connector

Frequently Asked Questions

What fasteners are recommended for installing the TP312 tie plate?

The TP312 can be installed with (54) 0.131 in. x 2-1/2 in. nails, 0.131 in. x 1-1/2 in. nails, or #9 Strong-Drive SD screws for a secure connection.

Why does the TP312 feature a staggered nail pattern?

The staggered nail pattern is specifically designed to distribute fastener load across the wood member, providing a secure connection while reducing the risk of splitting the lumber during installation.

What does the G90 galvanized coating mean for the TP312?

The G90 designation refers to the zinc galvanized coating weight applied to the 20-gauge steel, offering extra corrosion resistance that makes the TP312 suitable for applications where moisture exposure is a concern.

Can the TP312 be used on both faces of a lumber member?

The TP312 is designed for flat, wood-to-wood connections and is ideal for use on the flat surface of lumber. Simpson Strong-Tie straps and plates in this product family are engineered so that many can be used back-to-back on a piece of lumber without fastener interference.

Note: Product dimensions may differ from picture. Please see item description for specifications.