EVT50C-BEHDC — Black Extra Heavy-Duty 2-Inch Truss Clamp

The EVT50C-BEHDC is an extra heavy-duty black lighting clamp designed for the most demanding rigging applications. Manufactured from the highest quality 6061-T6 aluminum alloy and finished in a durable black powder coat, this clamp is engineered to support heavy fixtures and structural loads with maximum security. Its robust profile and upgraded M12 hardware make it the professional choice for large-scale production, touring, and permanent installations where standard M10 clamps are undersized for the fixture load.

Function and Compatibility:

Designed for use with standard 48mm to 51mm (2-inch) trussing, tube, or pipe, the EVT50C-BEHDC delivers a secure grip on the main chords through a wing nut collar assembly. Unlike standard clamps, this heavy-duty version features an upgraded M12 x 30mm attachment bolt with spring lock washer, providing superior shear resistance and load handling for heavier moving heads, video panels, and audio arrays. The M12 bolt diameter is larger than the M10 used on most standard clamps — verify that your fixture yoke mounting slot accepts M12 hardware before ordering. Compatible with EVT290S, EVT290I, F34 series truss main chords, and standard Schedule 40 aluminum pipe in the 48mm to 51mm outer diameter range.

Key Features

• Black Powder Coat Finish: Professional non-reflective finish absorbs light and integrates with dark stage environments and black truss systems.
• 100 kg Shear Load Rating: Rated at max shear load 100 kg and tensile strength 44.89 kN — TUV Nord Certified for heavy moving heads, video panels, and audio arrays.
• M12 Attachment Bolt Included: Ships with M12 x 30mm bolt and spring lock washer — larger bolt diameter than standard M10 clamps for increased shear resistance under heavy fixture loads.
• 48mm to 51mm Tube Fit: Designed strictly for 48mm to 51mm (2-inch) OD tubing — compatible with F34 truss, EVT290S, EVT290I main chords, and Schedule 40 aluminum pipe.
• 6061-T6 Aluminum Body: Premium structural aluminum construction for heavy-duty rigging duty.
• S45C Carbon Steel Hardware: High-strength S45C carbon steel fasteners for reliable long-term clamping performance.
• TUV Nord Certified: Independently tested and certified load ratings.
• Wing Nut Closure: Tool-free collar tightening — open, seat, and lock without wrenches or hex keys.

Assembly Instructions

1. Open: Release the wing nut by turning it counterclockwise to release the bolt and open the collar.
2. Mount: Place the EVT50C-BEHDC on the truss, tube, or pipe and close the collar.
3. Secure: Put the bolt back in place with the washer and wing nut above the collar.
4. Align: Ensure the clamp is located in its proper place on the tube before final tightening.
5. Tighten: Turn the wing nut clockwise to fully tighten and secure the clamp into place.

Safety and Engineering Notice

Critical Load Rating Information: Do not exceed the load capacity of the clamp or the truss system. The clamp must be fully inspected before use. In the occurrence of any damage or defect, the clamp should not be used.

Important Guidelines for Safe Use:

• Secondary Safety: The use of safety cables is highly recommended for maximum security on all overhead applications.
• Professional Review: A licensed professional engineer shall review all structures, lighting plots, or other clamp uses.
• Hardware Check: Ensure the M12 bolt and wing nut are free of burrs and thread damage before use.

Compatibility Warning

Crucial Steps for Safe Assembly:

• Verify Tube Diameter: Designed strictly for 48mm to 51mm (2-inch) tubing. Do not use on smaller decorative truss.
• Check Fixture Yoke: This clamp uses an M12 bolt. Ensure your fixture mounting bracket hole is large enough to accept M12 hardware — standard clamps are often M10.

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.