#Product Trends
Tension Bolts and compact Tension Nuts complement the HEICO-TEC® product line
Compact design - more space for assembly - high preload forces possible
HEICO-TEC® tensioning elements are used wherever bolted connections reach larger dimensions that make simple pretensioning difficult or even impossible. In bolted joints greater than M24 (> 1"), it is difficult for an operator to achieve an accurate preload, so they often resort to hydraulic or pneumatic tools - a very time-consuming and expensive solution.
The same functional principle applies to the new HEICO-TEC® Tension Bolts as with the HEICO-TEC® Tension Nuts, where the pretensioning force of the large main thread is distributed over several smaller pressure bolts. Instead of tightening a large nut or bolt with high torque, when using the HEICO-TEC® Tensioning Systems, much smaller pressure bolts are tightened in order to achieve the same pretensioning force - and all that is needed is a hand-held torque wrench. HEICO-TEC® Tension Bolts, which expands the HEICO-TEC® Tensioning Systems product line, are specifically designed for confined space applications. Compared to a conventional stud + (tension) nut design, the smaller outside diameter and total head height of the one-piece HEICO-TEC® Tension Bolt provides a critical advantage compared to a conventional hex head or tension nut. As an additional advantage, the operator has to handle and install just a single part (instead of a stud + nut). Like with the HEICO-TEC® Tension Nut, the HEICO-TEC® Tension Bolt creates torsion-free preload in the main bolt. Wherever technicians face tight installation spaces or require a single, easy-to-install tensioning device, HEICO-TEC® Tension Bolts provide the best solution.
Our HEICO-TEC® Tension Bolts in strength class 8.8 (grade CH in inch sizes) can directly replace same-strength conventional bolts in the dimension range of M20-M100 (1" - 4"). We can also offer custom designs in higher strength classes, different materials, or other specific needs.
