Thomas Betts b917 Five-hole Angle Connector Galvanized Steel

Product Description

The THOMAS BETTS b917 is a five-hole corner-type angle connector used for joining and bracing channel and strut assemblies in electrical and mechanical support systems. Fabricated from steel with a hot-dip galvanized finish, it delivers corrosion resistance suited for both indoor and outdoor installations. The connector measures 3 inches in length from the beam, 1-1/2 inches in width, and 4-1/2 inches in total height, with a wall thickness of 1/4 inch. Five 9/16-inch diameter holes are spaced 1-1/2 inches on center, with the first hole 3/4 inch from the end, providing consistent bolt alignment across standard strut hardware. Electricians and electrical contractors are the primary installers of this fitting.

The b917 is designed for use in channel and strut 90-degree angle plate applications. It functions as a structural corner fitting where two sides of a strut framework meet, commonly used in conduit support systems, equipment mounting racks, cable tray support structures, and general unistrut-style framing assemblies in commercial and industrial settings. The two-sided corner configuration makes it well suited for right-angle joints in both ceiling and wall-mounted strut systems. It is manufactured in the USA.

Key Features

• Hot-dip galvanized steel construction for corrosion resistance in exposed and outdoor environments
• Five 9/16-inch diameter holes for compatibility with standard strut hardware and bolts
• 1-1/2-inch on-center hole spacing with 3/4-inch end distance for consistent bolt alignment
• 1/4-inch wall thickness provides structural rigidity at corner joints
• Two-sided corner design supports 90-degree strut frame connections
• Made in the USA

Compatibility

Designed as an OEM-style replacement and standard fitting for channel and strut support systems using 9/16-inch hardware on 1-1/2-inch hole centers, consistent with common strut framing systems in commercial and industrial electrical installations.

Installation Notes

Installation is typically performed by licensed electricians working with strut and channel support systems in accordance with applicable NEC requirements. De-energize any nearby electrical circuits and secure the mounting structure before attaching the connector. Use appropriately rated bolts and hardware matched to the 9/16-inch hole diameter. Do not exceed the load ratings of the strut system into which this fitting is installed.

Technical Specifications

• Type: Corner Angle Connector
• Material: Steel
• Finish: Hot-Dip Galvanized
• Length (from beam): 3 inches
• Width: 1-1/2 inches
• Height (total): 4-1/2 inches
• Thickness: 1/4 inch
• Number of Holes: 5
• Hole Diameter: 9/16 inch
• Hole Spacing: 1-1/2 inches on center, 3/4 inch from end
• Number of Sides: 2
• Country of Origin: USA

Standard Information

• Brand: THOMAS BETTS
• Manufacturer Part Number: b917