
TN-Compact Style Replacement Nut
TN Series HYTORC Nut™ combine durability and efficiency. TN Clamps were originally designed to overcome the tight radial restrictions found in steam turbine casings. One of the major advantages is the TN’s ability to fit in tight spaces. Do you have a difficult counter bore or flange radius, no problem! We fit where others can’t.
There is no other bolting method available that is Faster, Safer or more Accurate then the TN Series Clamp Nut™.
The TN Series HYTORC Nut™ line covers a wide range of sizes and applications. The compact radial footprint has made the TN Series our most popular HYTORC Nut™. When a bolted connection has a challenging counter bore or flange radius, a TN Series HYTORC Nut™ will solve the problem. The TN Series compact size limits the maximum stud protrusion to approximately one diameter. TN Series clamps are typically specified when overhead obstructions are not present.
BENEFITS
- Reaction free bolt tensioning
- Pure tensile loads
- 100% elimination of galling on flange and stud surfaces
- Highest bolt tension accuracy and reliability available
FEATURES
- Smallest possible footprint (Diameter = Approx. heavy hex nut across flats)
- Internal spline on the inner sleeve allows for simple economical drive
- Castellated outer sleeve – eliminates need for oversize socket drive

- Standard drives available for all applicable tools
- Includes features to permit horizontal or inverted hands free operation
- Low, Standard, Medium & High temperature ratings available
- All thread forms available
The TN Series HYTORC Nut™ is composed of three components: outer sleeve, inner sleeve and washer. As the outer sleeve turns (blue arrow), the inner sleeve moves upwards (red arrow). The washer spline rotationally couples the inner sleeve with the washer preventing the inner sleeve from turning while providing a solid reaction point for turning the outer sleeve.



