The Simpson Hidden Timber Connector Kit (ETB90A-SCRB) delivers a clean, professional beam connection with absolutely no visible hardware. Engineered for structural integrity, this system uses interlocking plates fastened to each member that lock together to form a secure, load-tested beam connection - keeping the aesthetics of exposed timber framing intact without sacrificing performance.

Key Features

• Completely hidden connection - no visible hardware after installation
• Interlocking plate design locks supporting and supported beams together for a secure structural connection
• Load-tested beam connection system for verified performance
• Lower plate is recessed into a routed pocket in the side of the supporting beam for a flush, concealed finish
• Horseshoe plate fastens onto the end of the supported beam using the included SCRB screws
• SCRB screws are driven at a downward angle (approximately 45 deg.) for optimized holding power
• Kit includes SCRB screws - no need to source fasteners separately for the horseshoe plate installation

Specifications

• Manufacturer Part Number (MPN): ETB90A-SCRB
• Brand: Simpson Strong-Tie
• Country of Origin: Denmark (DK)

Approved Applications

• Structural beam-to-beam connections in exposed timber framing
• Applications where concealed hardware and clean aesthetics are required
• Load-bearing connections between supporting and supported timber beams

What's Included

• Lower plate (for installation into routed pocket of supporting beam)
• Horseshoe plate (for installation onto end of supported beam)
• SCRB screws for horseshoe plate installation

Note: 16d hot-dip galvanized nails for lower plate installation are not included in the kit and must be sourced separately.

Installation Overview

• Rout a 3/8" (10mm) deep pocket into the side of the supporting beam for the lower plate.
• Install the lower plate using 16d hot-dip galvanized nails (not included in kit).
• Install the horseshoe plate onto the end of the supported beam using the SCRB screws supplied in the kit, driving screws at a downward angle of approximately 45 deg..

Disclaimer: Product dimensions and/or screw holes may differ from picture. Please see item description for specifications.

Frequently Asked Questions

Will any hardware be visible after the connection is installed?

No. The ETB90A-SCRB is specifically designed for a completely hidden connection - no visible hardware remains after installation. The lower plate is recessed into a routed pocket in the side of the supporting beam for a flush, concealed finish, while the horseshoe plate fastens onto the end of the supported beam and becomes concealed once the beams are joined.

Do I need to purchase screws separately for this kit?

No. The kit includes SCRB screws for the horseshoe plate installation, so there is no need to source fasteners separately. The SCRB screws are driven at a downward angle of approximately 45 deg. for optimized holding power.

What type of connections is the ETB90A-SCRB approved for?

This connector is approved for structural beam-to-beam connections in exposed timber framing, load-bearing connections between supporting and supported timber beams, and applications where concealed hardware and clean aesthetics are required. The system is load-tested for verified performance.