The HEICO-TEC® tension nut is unique in the fact that the pre-tension force of the large main thread is distributed to many smaller pressure bolts. Because these pressure bolts are smaller a conventional torque wrench is all that is needed to achieve the correct pretension force, eliminating the need for complex, bulky or heavy tools and making the securing of large bolted joints more convenient and easy.
With HEICO-TEC® the nut body is screwed onto the main thread just like a conventional nut – but it is not tightened.When the pressure bolts are tightened they push the pressure pins against the part to be tensioned and at the same time the bolt elongates.The pre-tension force created in this way is purely axial and therefore free from harmful torsion or bending.The design also includes an incorporated hardened washer that protects the tensioned parts from high pressure loads caused by the pressure pins.
The inherent mechanical flexibility of the HEICO-TEC® design means the bolted joint performs as if it has a greater clamping length, making it highly resistant to loosening forces.
This unique tension nut is available in sizes M30 – M120 and is supplied with an Assembly Template that helps installers tighten the bolts correctly.
HEICO-TEC® - SIMPLE, FAST, RELIABLE
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Contact Details:
Paul Windsor – pw@heico-fasteners.co.uk
Tel: 07584 466884
