EVT50C-BIC — Self-Locking Hook Clamp, Low Profile Matte Black

The EVT50C-BIC Self-Locking Hook Clamp is a professional rigging solution designed for speed and stealth. Featuring an advanced auto-locking mechanism, this clamp allows for true one-person installation: simply hook it over the truss chord, and the internal spring lock instantly engages to hold the fixture's weight while you tighten the wing nut.

Function and Compatibility:

Unlike standard bulky couplers, the EVT50C-BIC features a slim, low-profile design that holds lighting fixtures closer to the truss tube, eliminating unsightly gaps for a clean, high-end look. Finished in a non-reflective matte black powder coat, it blends seamlessly into dark stage environments.

Truss Compatibility: Fits F34, EVT290S, and all standard 290mm conical truss systems, as well as EVT12S and other standard 12-inch plated truss systems using bolt connections.

Key Features

• One-Person Installation: The self-locking hook supports the fixture immediately, allowing you to tighten the bolt without holding the heavy light.
• Low-Profile Design: Sits tighter to the truss than standard O-clamps for a streamlined, professional appearance.
• High-Strength Hardware: Includes M10 x 30mm attachment bolt with spring lock washer. Bolt tensile strength: 12.26 kN.
• Matte Black Powder Coat: Durable non-reflective finish prevents glare and remains invisible to the audience under stage lighting.
• 48mm to 50mm Tube Compatibility: Compatible with standard 48mm to 50mm (1.9-inch to 2.0-inch) truss tubes.
• Safe Working Load 150 kg: Rated for a safe working load of 150 kg (330 lbs), TUV Nord Certified.
• 6061-T6 Aluminum Alloy: High-strength structural aluminum construction.
• S45C Carbon Steel Hardware: High-strength S45C carbon steel fasteners for reliable long-term clamping performance.

Designed by Evolve Truss, the EVT50C-BIC is the preferred choice for installers who need a secure, self-locking M10 clamp that disappears into the rig.

Safety and Engineering Notice

Critical Rigging Guidelines:

• Load Rating: Do not exceed the rated safe working load of 150 kg (330 lbs).
• Inspection: Check the spring-loaded locking mechanism before every use. If the hook does not click and lock on engagement, remove from service immediately.
• Secondary Safety: The use of safety cables is mandatory for all overhead rigging applications.
• Installation: Hook the clamp over the tube, listen for the click of the self-lock engaging, and firmly tighten the wing nut before attaching any load.
• Professional Review: The purchase of this product does not authorize or approve a specific installation or use. A licensed professional engineer shall review all structures, lighting plots, or other clamp uses.

Compatibility Warning

Crucial Steps for Safe Assembly:

• Verify Diameter: Designed strictly for 48mm to 50mm (2-inch) tubing. Do not use on smaller decorative truss with 35mm (1.37-inch) tubes such as the EVT220 series.
• Check Clearance: Ensure the hook body has sufficient clearance around bracing to seat fully onto the chord before tightening.

Technical Resources and Project Support

Need load tables, CAD files, or engineering documentation for this product? Contact the Evolve Truss team — we'll get you what you need.

Disclaimer and Guidance Statement: The purchase of any product shall not be construed as authorizing or approving a specific installation or usage. A licensed professional engineer shall review all structures, lighting plots, or any other product uses. While exhaustive efforts have been undertaken to ensure the precision of this information, Evolve Truss Worldwide, LLC hereby disclaims any and all liability for errors. These drawings are intended solely for the purpose of providing guidance and should not be construed as definitive representations.