The Simpson 3-1/8 in. x 7 in. Tie Plate from Simpson is a flat steel connector built for splicing and reinforcing wood-to-wood connections on flat members, making it a reliable go-to for both light repairs and more demanding structural connections. Formed from 20-gauge steel and finished with a G90 zinc galvanized coating for strong corrosion resistance, this tie plate delivers a clean, secure fit wherever flat wood members need to be joined or reinforced. Its straightforward design keeps installation simple while the staggered nail pattern does the work of holding connections tight without splitting the wood.

Key Features

• Flat tie plate design for wood-to-wood connections - engineered specifically for splicing and miscellaneous flat member connections, giving you a versatile solution across a wide range of repair and framing applications
• Staggered nail pattern - distributes fastener load to create a secure hold while actively reducing the risk of splitting the wood members being joined
• 20-gauge steel construction - provides a solid, dependable connector that holds its shape and maintains structural integrity through the connection
• G90 zinc galvanized finish - adds a durable layer of corrosion resistance, helping the plate hold up in conditions where moisture exposure is a concern
• Available flat (TP) or with a flange (TPA) - lets you choose the right configuration for your application, whether a flush flat connection or added flange strength is needed
• Compatible with multiple fastener types - works with nails or #9 Strong-Drive SD screws, giving you flexibility in how you complete the installation

Why This Product

• Versatile across connection types - whether you are splicing lumber, reinforcing a joint, or making miscellaneous wood-to-wood connections on flat members, this tie plate handles a broad range of framing and repair tasks without requiring specialized hardware
• Built-in split resistance - the staggered nail pattern is not just a layout choice; it is specifically designed to protect wood members from splitting during and after installation, helping connections stay intact longer
• Corrosion-resistant finish for lasting performance - the G90 galvanized coating means the plate resists rust and degradation, making it a dependable choice where long-term durability matters
• Part of a proven connector family - Simpson straps and plates are designed with practical installation in mind, offering simple, consistent solutions that work across a wide range of lumber sizes and project types

Specifications

• Model Number (MPN): TP37
• Width: 3-1/8 in.
• Length: 7 in.
• Gauge: 20
• Coating: Zinc Galvanized, G90
• Finish: Zinc Galvanized, G90
• Install With: (32) 0.131 in. x 2-1/2 in. nails, 0.131 in. x 1-1/2 in. nails or #9 Strong-Drive SD screws (sold separately)
• Country of Origin: United States

Frequently Asked Questions

What is the Simpson TP37 tie plate used for?

The TP37 is a flat tie plate designed for splicing and reinforcing miscellaneous wood-to-wood connections on flat members. It provides a versatile, easy-to-install solution for a wide range of light repair and structural connection applications.

What fasteners are recommended for installing the TP37?

The TP37 is designed to install with (32) 0.131 in. x 2-1/2 in. nails, 0.131 in. x 1-1/2 in. nails, or #9 Strong-Drive SD screws.

Why does the TP37 feature a staggered nail pattern?

The staggered nail pattern is specifically designed to create a secure connection while actively resisting splitting in the wood members being joined, improving both the integrity and longevity of the connection.

What is the difference between the TP and TPA series tie plates?

The TP series, which includes the TP37, is a flat tie plate. The TPA series features a flange for added strength, making it suitable for applications where additional structural reinforcement is required.

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