External Tensioned Nut
Paired with a bolt tensioner, the external tension nut provides a solution for applications in which there are no exposed threads above the existing nut — enabling easy retrofit from torquing to tensioning.
Product Overview
The Riverhawk Externally Tensioned Nut provides an easy transition from torqued hardware to tensioned hardware. Until now, it has not been possible to replace torqued hardware with tensioned hardware unless there was a significant amount of thread protruding above the nut. Historically, retrofit has been accomplished by replacing the studs. However, with the application of our External Tensioned Nut, this is no longer the case.
Paired with a Riverhawk bolt tensioner, the externally tensioned nut is the perfect tensioning solution in applications in which there are no exposed threads above the existing nut. The Externally Tensioned Nut is designed to fit inside the clearance envelope of ANSI standard heavy hex nuts.
If the application requires a smaller envelope or even higher loads in the stud, several custom options are available. These custom options include the use of a washer under the nut to better distribute the load and higher strength materials to withstand greater preloads while remaining in the existing nut's radial footprint.
Key Features
- Retrofitting Capabilities — Change from Torquing to Tensioning Without Replacing Studs
- Radial Footprint No Larger Than Existing Nut
- Replaces Any Existing Nut (hex, 12-point, cap, etc.)
- Simple Installation — One-Person Operation
- No Extended Stud Thread Required
- ID Threaded to Fit Existing Stud; OD Threaded for Tensioner Grip
- Material Substitution Available for Higher Loads or Temperature
- Fits Inside ANSI Standard Heavy Hex Nut Envelope
Applications
Technical Specifications
See It In Action
Watch a live demonstration of our External Tensioned Nut.
Ready to Order or Need Help Specifying?
Our engineers are available to assist with product selection, sizing, and custom configurations.
