A hand-held torque wrench is all you need for tightening and loosening. No special tools are required. This makes maintenance easier.
Manual pre-tensioning saves on the transport and set-up times that would be required by special tools. HEICO-TEC® tension nuts are often already tightened in the time it takes to set up electric, hydraulic or pneumatic tools.
The pressure pins act like springs and increase the flexibility of the bolted joint. This compensates for settlement of the joint, thus preserving pre-load.
With the inherent mechanical flexibility of the HEICO-TEC® design, the bolted joint performs as if it has a greater clamping length, making it highly resistant to loosening forces.
The greater flexibility reduces the bolted joint’s dynamic stress, thus increasing its service life.
Controlled friction characteristics ensure the highest tightening and repeat accuracy – guaranteed and confirmed by DNV GL.
Because the HEICO-TEC® assembly is not damaged during tightening and loosening, the HEICO-TEC® tension nuts are reusable.
HEICO-TEC® tension nuts comply with all ISO 898-2 requirements. You can directly replace any conventional nut from the same strength class.
Our efficient and high volume manufacturing process means that we can transfer the cost benefits directly to our customers.
Assembly is fast and simple with HEICO-TEC® tension nuts. In addition to assembly instructions, an assembly template is also available for the standard product range. The template helps installers tighten the pressure bolts correctly.
The template is attached to the tension nut. The pressure bolts are tightened in sequence, according to a color system: For example, first the orange-colored then the blue and finally the white. This cycle is repeated until the torque wrench indicates the required tightening torque is achieved.
For easy documentation, the required tightening torque can be noted on the template. This template can be archived with the date as proof the procedure was done properly.