EVT50C-EHSC — Extra Heavy-Duty 2-Inch Swivel Truss Clamp with Locking Pin

The EVT50C-EHSC is an extra heavy-duty single-collar swivel truss clamp for 2-inch (50mm) OD tubing, truss, and pipe — combining a full-rotation swivel body with a dedicated locking pin that fixes the joint at a hard 90 degrees when the application requires a rigid rather than rotatable connection. Rated at max shear load 3,990 kg with 39,908 kN tensile strength, built from 6061-T6 aluminum alloy, and TUV Nord Certified, this is the heavy-duty swivel clamp for structural overhead rigging and industrial mounting where both angular freedom and rigid locking capability are required at the same connection point. The wing nut closure clamps the collar to the tube; the swivel body rotates a full 360 degrees to position the attached hardware at any angle, or locks to a fixed 90-degree position by engaging the locking pin before tightening.

Function and Compatibility:

The EVT50C-EHSC mounts to any 48mm to 51mm OD round tube or pipe through a single wing nut collar assembly. Once the collar is clamped to the tube, the swivel body can be rotated to any angle and held in position by tightening the accessory or fixture attachment hardware. For applications that require the swivel joint to stay fixed at exactly 90 degrees under load — bracket arms, cross-beam supports, pipe stanchions — the locking pin engages to prevent rotation before the assembly is loaded. Without the locking pin, the joint is free to rotate through its full range, allowing fixtures and accessories to be aimed or repositioned without releasing the collar from the tube. The included S45C carbon steel hardware maintains clamp integrity under the structural loads this rating class is designed for. Compatible with EVT290S, EVT290I, F34 series truss main chords, and standard Schedule 40 aluminum pipe used in stage, film, broadcast, and industrial overhead rigging.

Key Features

• 360-Degree Rotation or Fixed 90 Degrees: The swivel body rotates a full 360 degrees for any-angle positioning, or locks at 90 degrees using the dedicated locking pin for rigid right-angle connections under structural load.
• Extra Heavy-Duty Load Rating: Rated at max shear load 3,990 kg and tensile strength 39,908 kN — engineered for structural overhead rigging and industrial mounting applications well beyond standard fixture-hanging duty.
• Single-Collar Configuration: One collar clamps to the tube; the swivel body provides angular adjustment at the attachment point — distinct from the dual-collar BEHSC which joins two separate tubes.
• 48mm to 51mm Tube Fit: Fits standard 48mm to 51mm (2-inch) OD tubing — compatible with F34 truss, EVT290S, EVT290I main chords, and Schedule 40 aluminum pipe.
• 6061-T6 Aluminum Body: High-strength structural aluminum appropriate for the load demands of this rating class.
• 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.
• Wing Nut Closure: Tool-free collar tightening — 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.
2. Place the EVT50C-EHSC 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-EHSC 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 EVT50C-EHSC into place. If a fixed 90-degree angle is required, engage the locking pin before loading the joint.

Safety and Rigging Notice

Critical Rigging Guidelines:

• Load Rating: Do not exceed the rated load capacity of the EVT50C-EHSC or the truss system it is installed on.
• Locking Pin: For fixed 90-degree connections under structural load, the locking pin must be fully engaged before loading the joint. Do not rely on wing nut friction alone to maintain a right-angle position under load.
• Inspection: The EVT50C-EHSC 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.