EVT50C-BEHNSC — Extra Heavy-Duty 2-Inch Black Narrow Swivel Truss Clamp

The EVT50C-BEHNSC is an extra heavy-duty black narrow swivel truss clamp for standard 2-inch (50mm) OD truss, tube, and pipe — engineered for applications where a standard fixed clamp is undersized for the load or the angle. The swivel body rotates a full 360 degrees, allowing the attached fixture, speaker, or accessory to be aimed or positioned at any angle without moving the clamp on the tube. Built from 6061-T6 aluminum alloy and rated at a maximum shear load of 2,836 kg with 27.52 kN tensile strength, this is the heavy-duty swivel clamp for demanding overhead rigging, permanent installations, and high-load accessory mounting. TUV Nord Certified and finished in matte black for low-profile visual integration with black truss systems.

Function and Compatibility:

The EVT50C-BEHNSC mounts to any standard 2-inch (50mm) OD truss tube, pipe, or round bar using a bolt-and-collar assembly with a wing nut closure — the same installation method as standard fixed clamps, with the addition of a swivel joint between the collar and the accessory attachment point. The swivel allows the connected hardware to rotate independently of the clamped position, enabling precise directional adjustment of speakers, lighting fixtures, cameras, signs, and rigging accessories without re-clamping. The narrow body profile reduces interference in tight rig configurations where adjacent clamps, cables, and fixture bodies compete for space on the tube. Compatible with EVT290S, EVT290I, F34 series truss main chords, and standard Schedule 40 pipe used in stage, film, broadcast, and industrial overhead rigging.

Key Features

• 360-Degree Swivel Rotation: The swivel body rotates a full 360 degrees, allowing fixtures and accessories to be aimed or adjusted at any angle without repositioning the clamp on the tube.
• Extra Heavy-Duty Load Rating: Rated at max shear load 2,836 kg and tensile strength 27.52 kN — significantly higher capacity than standard-duty clamps for demanding overhead and permanent installation applications.
• Narrow Body Profile: Compact form factor reduces interference between adjacent clamps, cable bundles, and fixture hardware in high-density rig configurations.
• Matte Black Finish: Low-profile black finish integrates with black truss systems, dark stage environments, and any rigging configuration where hardware visibility needs to be minimized.
• 6061-T6 Aluminum Alloy: High-strength structural aluminum construction — lightweight for quantity use across a full rig without adding significant load to the truss system.
• TUV Nord Certified: Independently tested and certified load ratings — not manufacturer self-certification.
• Wing Nut Closure: Tool-free tightening — open, seat, position, and lock using the wing nut without wrenches or hex keys.
• 2-Inch (50mm) Tube Fit: Designed for standard 50mm OD truss and pipe, compatible with F34, EVT290S, EVT290I, and standard Schedule 40 aluminum pipe.

Assembly Instructions

1. Release the wing nut by turning it counterclockwise to release the bolt and open the collar.
2. Place the EVT50C-BEHNSC on the truss, tube, or pipe and close the collar.
3. Put the bolt back in place with the washer and wing nut above the collar.
4. Make sure the EVT50C-BEHNSC is set in its proper place on the truss, tube, or pipe before tightening the wing nut.
5. Turn the wing nut clockwise to tighten and secure the EVT50C-BEHNSC into place.

Safety and Rigging Notice

Critical Rigging Guidelines:

• Load Rating: Do not exceed the rated load capacity of the EVT50C-BEHNSC or the truss system it is installed on.
• Inspection: The EVT50C-BEHNSC should be fully inspected before every use. In the occurrence of any damage or defect, the clamp should not be used.
• Secondary Safety: The use of safety cables is recommended for maximum security on all overhead applications.
• 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.

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.