EVT50C-BEHSC — Extra Heavy-Duty 2-Inch Dual Swivel Truss Clamp

The EVT50C-BEHSC is an extra heavy-duty dual aluminum truss clamp that connects two 2-inch (50mm) OD tubes at any angle — a two-collar rigging component rated at max shear load 3,990 kg with 39,908 kN tensile strength for structural tube-to-tube connections in overhead rigging, truss-to-pipe bridging, and any application where two round structural members need to be joined. The swivel joint between the two collars rotates a full 360 degrees for connections at any angle, or locks at 90 degrees with a dedicated locking pin for fixed right-angle connections that need to resist rotation under load. Built from 6061-T6 aluminum alloy with S45C carbon steel hardware and TUV Nord Certified — this is not a fixture-mounting clamp, it is a structural joining component designed for the loads that come with connecting two tube runs.

Function and Compatibility:

The EVT50C-BEHSC uses two independent collars — each collar clamps to its own 50mm OD tube using the wing nut closure, and the swivel joint between them allows the angle between the two tubes to be set before tightening. For connections at a fixed 90-degree angle, the locking pin engages to prevent the swivel from rotating under load, converting the joint from a rotatable connection to a rigid right-angle clamp. For connections at any other angle, the swivel is left without the pin and the wing nuts on both collars are tightened to hold the tubes at the desired position. Both collars use the same wing nut closure as standard single clamps — release counterclockwise, seat onto the tube, tighten clockwise. Compatible with any 48mm to 51mm OD round tube or pipe including EVT290S, EVT290I, F34 series truss main chords, and standard Schedule 40 aluminum pipe.

Key Features

• Dual Collar Configuration: Two independent collars clamp to two separate 50mm OD tubes — a structural tube-to-tube joining component, not a fixture-mounting clamp.
• 360-Degree Rotation or Fixed 90 Degrees: The swivel joint rotates a full 360 degrees for tube connections at any angle, or locks at 90 degrees using the dedicated locking pin for fixed right-angle structural connections.
• Extra Heavy-Duty Load Rating: Rated at max shear load 3,990 kg and tensile strength 39,908 kN — engineered for the structural loads of tube-to-tube connections in overhead rigging and industrial framework.
• 48mm to 51mm Tube Fit: Both collars fit standard 48mm to 51mm (2-inch) OD tubing — compatible with F34 truss, EVT290S, EVT290I, and Schedule 40 aluminum pipe.
• 6061-T6 Aluminum Body: High-strength structural aluminum construction appropriate for heavy-duty structural joining applications.
• S45C Carbon Steel Hardware: High-strength S45C carbon steel fasteners for reliable long-term clamping performance under structural loads.
• TUV Nord Certified: Independently tested and certified load ratings — not manufacturer self-certification.
• Wing Nut Closure on Both Collars: Tool-free tightening on each collar — open, seat, position, and lock without wrenches or hex keys.

Assembly Instructions

1. Release the wing nut by turning it counterclockwise to release the bolt and open the collar on the first tube position.
2. Place the first collar of the EVT50C-BEHSC 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 first collar is set in its proper place on the tube before tightening the wing nut.
5. Turn the wing nut clockwise to tighten and secure the first collar. Repeat steps 1 through 4 for the second collar on the second tube.
6. If a fixed 90-degree angle is required, engage the locking pin before tightening the second collar. For any other angle, set the desired position and tighten both collars to hold.

Safety and Rigging Notice

Critical Rigging Guidelines:

• Load Rating: Do not exceed the rated load capacity of the EVT50C-BEHSC or the truss system it is installed on.
• Structural Use Only: This is a tube-to-tube structural joining clamp — it is not designed for fixture or accessory mounting. Do not use as a single-collar fixture clamp.
• Locking Pin: For fixed 90-degree connections under load, the locking pin must be fully engaged before tightening the collars. Do not rely on wing nut friction alone to maintain a right-angle position under structural load.
• Inspection: The EVT50C-BEHSC 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.