HEICO-TEC®
Tension Nut

  • Simple
  • Fast
  • Reliable
HEICO-TEC Spannmutter
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HEICO-TEC® system

For a secure joint with a HEICO-TEC® tension nut, no electric, hydraulic, or pneumatic tools are needed. All you need is a torque wrench.

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Design and function

Compared with conventional methods, HEICO-TEC® tension nuts offer considerable advantages for tensioning large bolted joints quickly, simply and reliably.

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Quality

When you work with HEICO, everything is provided from one source.

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HEICO-TEC®
Advantages

  • Simple
    A hand-held torque wrench is all you need for tightening and loosening. No special tools are required. This makes maintenance easier.
  • Fast
    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.
  • Reliable
    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.
  • Safe
    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.
  • Durable
    The greater flexibility reduces the bolted joint’s dynamic stress, thus increasing its service life.
  • Precise
    Controlled friction characteristics ensure the highest tightening and repeat accuracy – guaranteed and confirmed by DNV GL.
  • Reusable
    Because the HEICO-TEC® assembly is not damaged during tightening and loosening, the HEICO-TEC® tension nuts are reusable.
  • Compatible
    HEICO-TEC® tension nuts comply with all ISO 898-2 requirements. You can directly replace any conventional nut from the same strength class.
  • Economical
    Our efficient and high volume manufacturing process means that we can transfer the cost benefits directly to our customers.
HEICO-TEC® Vorteile
Funktionsweise

HEICO-TEC®
Assembly Template

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.

News

VDI forum in Düsseldorf, Germany – main topic: bolt securing systems and thread seals

VDI forum in Düsseldorf, Germany – main topic: bolt securing systems and thread seals

VDI forum in Düsseldorf, Germany – main topic: bolt securing systems and thread seals. M.Eng Dipl.-Ing. (FH) Tobias Hübing, head of HEICO’s technical laboratory, will represent HEICO Befestigungstechnik GmbH on the VDI Wissensforum.

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