EVT50C-BHC — Black Half-Coupler Clamp with M10 Bolt for 48mm to 51mm Tubing

The EVT50C-BHC is a black anodized half-coupler clamp for 48mm to 51mm (2-inch) OD truss, tube, and pipe — rated at 500 kg safe working load with 3,990.3 kN tensile strength and fitted with a standard M10 x 35mm metric attachment bolt for direct connection to the M10 fixture yokes and mounting brackets used across the majority of professional lighting and rigging hardware. The half-coupler body seats against the tube surface for a stable, close-fitting grip, the black anodized finish integrates with dark overhead structures, and at 0.52 kg the clamp stays lightweight for quantity deployment across a full rig. Built from 6061-T6 aluminum alloy and TUV Certified.

Function and Compatibility:

The EVT50C-BHC clamps to any 48mm to 51mm OD round tube or pipe through a wing nut collar assembly. The half-coupler body profile conforms closely to the tube surface, providing a stable seating geometry that resists rotation and shifting under sustained fixture loads. The included M10 x 35mm bolt with spring lock washer connects directly to any fixture yoke or accessory bracket with a standard M10 mounting slot — the metric bolt size used across the majority of professional lighting fixtures, moving heads, and rigging accessories, eliminating the half-inch compatibility check required by the HCPB variant. The spring lock washer maintains bolt tension under operational vibration and thermal cycling without re-tightening. The black anodized finish absorbs light across every stage, UV, and overhead lighting condition. 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 Anodized Finish: Factory-applied black anodized surface treatment absorbs light and integrates with black truss systems and dark stage environments.
• M10 Metric Attachment Bolt: Ships with M10 x 35mm bolt and spring lock washer — the standard metric bolt size used across the majority of professional lighting fixtures and rigging accessories, compatible with most fixture yokes without a separate adapter.
• Half-Coupler Seating Profile: Body conforms closely to the tube surface for a stable, low-profile grip that resists rotation and shifting under fixture loads.
• 500 kg Safe Working Load: TUV Certified at 500 kg SWL with 3,990.3 kN tensile strength for heavy professional lighting and rigging applications.
• Lightweight at 0.52 kg: Compact and lightweight for quantity use across a full rig without adding significant load to the truss system.
• 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 construction.
• S45C Carbon Steel Hardware: High-strength S45C carbon steel fasteners for reliable long-term clamping performance.
• TUV 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. Release the wing nut by turning it counterclockwise to release the bolt and open the collar.
2. Place the EVT50C-BHC 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-BHC is located 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-BHC into place.

Safety and Rigging Notice

Critical Rigging Guidelines:

• Load Rating: Do not exceed the 500 kg safe working load of the EVT50C-BHC or the rated capacity of the truss system it is installed on.
• Inspection: The EVT50C-BHC 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.