TRI-LOC®
Prevailing-Torque Triple Locknut
The TRI-LOC® is an all-metal fastener designed to provide a secure and vibration-resistant connection in various applications. This locknut features three locking elements that deflect the threads at the top of the nut, creating a reliable locking mechanism.
TRI-LOC® locknuts are engineered to maintain joint integrity under conditions involving continuous heavy vibration, shock, extreme temperatures, and numerous loading cycles. The three deflected threads produce a prevailing torque that resists loosening without the need for additional locking devices. This self-locking feature is crucial in applications where maintaining consistent clamping force is essential for safety and performance.
Application
TRI-LOC® locknuts are suitable for a wide range of applications, including:
- Automotive Industry: Securing components subject to constant vibration and dynamic loads.
- Machinery and Equipment: Maintaining the integrity of assemblies in industrial machines operating under harsh conditions.
- Construction: Providing reliable fastening solutions in structures exposed to dynamic forces and environmental stressors.
Specifications
Sizes
Available in various sizes, including special light or heavy torque versions, to accommodate different application requirements.
Materials
Manufactured from steel grades 2, 5, and 8, Monel, brass, bronze, aluminum alloys, and stainless steel to suit different environmental conditions and strength needs.
Threads
Offered in American Standard and Metric, including hex-finished, jam, heavy, hi, coupling, flange, wing, weld, and track nuts, to accommodate diverse threading standards.
Finishes
Options include plain, zinc, cadmium, hot-dipped galvanized, and other platings and coatings to meet specific corrosion resistance needs.
Installation
The installation process for the TRI-LOC® locknut is straightforward:
Threading
Manually spin the locknut onto the bolt until it contacts the bearing surface.
Seating
Continue to tighten the locknut using an appropriate wrench until it is firmly seated against the base.
Locking
As the nut is tightened, the three deflected threads create frictional interference, producing a prevailing torque that secures the nut in place.
This method ensures a secure and maintenance-free fastening without the need for supplementary locking devices.
