EVT290S Truss Systems Knowledge Center
EVT290A-CPNSS Stainless Steel Coupler-Pin & Locknut Set.
10-Pack Threaded Hardware for Permanent 290 mm Truss Installations.
The EVT290A-CPNSS is a threaded coupler-pin and locknut set built for permanent 290 mm truss installations. Unlike standard quick-release coupler-pins that use an r-clip, each pin in this set has a threaded M8 end secured with a nylon-insert locknut, eliminating the risk of the connection vibrating loose over time. Manufactured from high-grade 304 stainless steel, it is the standard choice for truss that will remain installed for extended periods, such as in nightclubs, houses of worship, and retail spaces.
Product Facts
Product Overview
A Threaded, Vibration-Resistant Alternative to Standard R-Clip Pins.
The EVT290A-CPNSS replaces the standard coupler-pin and r-clip with a threaded coupler-pin and nylon-insert locknut. The M8 threaded end pairs with a locknut that holds tight without damaging the mating threads, and the nylon insert resists loosening from sound vibration or structural movement — making it the preferred choice wherever a truss structure will stay assembled long-term.
Common Applications
Built for Truss That Stays Up Long-Term.
The EVT290A-CPNSS is intended for permanent or semi-permanent truss installations where standard quick-release coupler-pins would be inappropriate. Its corrosion resistance also suits humid or outdoor environments. Confirm connection hardware and component condition as part of the approved truss system.
Included Hardware
10 Sets of Threaded Locking Hardware in Every Pack.
The EVT290A-CPNSS includes 10 M8 threaded coupler-pins and 10 nylon-insert locknuts — enough hardware for 10 individual permanent connection points. Confirm the current product package and connection requirements before use.
Technical Reference
EVT290A-CPNSS Specifications.
The following values identify the hardware material, thread specification, torque, pack quantity, weight, and listed compatibility. Confirm current manufacturer drawings, instructions, and technical documentation before ordering or assembling a truss system.
Identification
Product Details
Construction
Materials
Hardware
Thread and Torque
Compatibility
System Fit
System Compatibility
EVT290I, EVT290T, EVT290S, and F34 Truss Systems.
The EVT290A-CPNSS is designed for compatible EVT290I I-Beam, EVT290T Triangular, EVT290S Square, and F34-format 290 mm truss systems. Verify pin diameter and taper angle before using with other truss brands, and confirm pin hole alignment matches the truss receiver before installation.
Connection and Assembly
Torque to Spec for a Secure Permanent Connection.
Assembly should be completed by trained personnel using matching components and the approved truss system. Proper torque is critical — under-tightening may allow movement, while over-tightening can damage the threads or truss receiver.
Safety and Engineering
Locknuts Are Designed for Single Use.
The nylon insert in each locknut is generally designed for one-time use. Reusing a locknut after disassembly can compromise its ability to resist loosening, so replace locknuts whenever a permanent connection is taken apart and reassembled.
Product Questions
EVT290A-CPNSS Frequently Asked Questions.
How is this different from the standard coupler-pin and r-clip?
Instead of an r-clip through a cotter-pin hole, each coupler-pin has a threaded M8 end secured with a nylon-insert locknut. This resists vibration and loosening better than a standard r-clip, making it suited for permanent installations.
What torque should the locknut be tightened to?
Tighten each locknut to the recommended 10–12 Nm. Under-tightening can allow movement, and over-tightening can damage the threads or truss receiver.
Can the locknuts be reused after disassembly?
Nylon-insert locknuts are generally designed for single use. If a rig is disassembled, replace the locknuts to ensure a proper hold on reassembly.
Which truss systems is it compatible with?
It is compatible with EVT290I I-Beam, EVT290T Triangular, and EVT290S Square aluminum truss, as well as F34-format 290 mm truss systems.
Ready for a Permanent Truss Installation?
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