Product Description
EVT290A-CON | Conical Truss Coupler
The EVT290A-CON is the standard double-sided conical coupler designed for EVT290S 290 mm square truss systems. Often referred to as an “egg” or “spigot,” this essential component is the core link that joins two truss segments together end-to-end. Precision-machined for a seamless fit, it ensures a rigid, vibration-free connection that maintains the structural integrity of your truss run.
Function & Assembly:
The coupler is inserted into the conical receivers (ends) of two adjoining truss sections. Once aligned, it is secured in place using the included Truss Pins and R-Clips. This simple yet robust system allows for rapid assembly and disassembly without the need for tools, making it the industry standard for touring and event production.
Material Specifications:
- Connector Body: Precision-machined from high-grade Aluminum Alloy 6061-T6, selected for its high mechanical strength and excellent fatigue resistance.
- Coupler Pin: Manufactured from Steel Grade S45C, ensuring high tensile strength and shear resistance for the primary load-bearing fastener.
- Cotter Pin (R-Clip): Made from durable Spring Wire, providing reliable retention and elasticity for secure locking.
Key Features
- Double-Sided Design: Connects two standard truss receivers (female ends) linearly.
- Premium Alloy Construction: Connector body made of Aluminum Alloy 6061-T6.
- High-Strength Pins: Pins made of S45C Steel with Spring Wire safety clips.
- Vibration-Free Fit: Precision tapering eliminates rattle and ensures structural alignment.
- Hardware Included: Comes complete with 1 x Conical Coupler, 2 x Truss Pins, and 2 x R-Clips (everything needed for one connection point).
- Compatibility: Fits F34, EVT290S, and other brands utilizing the 290 mm square truss system. Exact fit with other manufacturers is not guaranteed.
- Essential Spare: A must-have item for any truss inventory to replace lost or damaged connectors.
Designed by Evolve Truss, the EVT290A-CON is fully compatible with the entire EVT290 series and allows for seamless integration with existing standard truss inventories.
⚠️ Safety & Engineering Notice
❗ Critical Assembly Information: The coupler is the primary load-transfer point between truss sticks. Never use a damaged, dented, or deformed coupler, as this compromises the entire span. Always ensure both pins are fully inserted and locked with R-clips.
Important Guidelines for Safe Use:
- Inspect couplers for “egging” (deformation of the pin holes) or burrs before use.
- Do not force the coupler into place with excessive hammering; a proper fit should be snug but seat fully with light tapping.
- Ensure all Pins and R-clips are correctly installed and fully secured on both sides of the connection.
- Do not mix truss components from different manufacturers if the tolerance varies.
- All truss structures must be reviewed and approved by a licensed professional engineer.
⚠️ Compatibility Warning for Mixed-Brand Builds
Crucial Steps for Safe Assembly:
- Verify all dimensions before integrating with other truss brands.
- Confirm conical connector type, node spacing, and system geometry.
- Mixing components without verification may compromise structural integrity and safety.
Why Choose Truss Genius?
✅ Certified Quality & Expert Support
- Authorized Dealer: Direct partnerships with trusted truss manufacturers.
- Expert Guidance: Real-world experience in staging, rigging, and system planning.
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Experience the Truss Genius Difference
Trusted by staging professionals nationwide, Truss Genius delivers certified components, expert guidance, and a seamless purchasing experience.
Contact us today to restock your EVT290A-CON couplers and keep your rig ready for the next show.

