multi-jack bolt nuts

Premium high-tension nuts and bolts by NMTG India for secure and reliable fastening in critical applications for…

  • Tensioner Nuts & Bolt is designed for direct replacement of Conventional Hex Nut & Bolt. No need of requirement of more space, just required to replace the hex nut. Normally in medium & heavy Industries, different bolted joints / connections are to be used which requires high Clamping Force. So, these require more effort in Tightening & Untightening.

Major two difficulties in Large size Bolt:

  • How to tighten the Bolt.
  • How to keep it tight.

Tightening a Bolt having an elastic stretch which keep the bolted assembly together. If the distance between Bolt head and nut is less, the elasticity will be insufficient. The better way to improve elasticity of a bolting system is by the use of our developed proven bolting system called Tensioner Nut Assembly.

multi-jack bolt nuts
  • Standard hex nuts used in such connections are tightened by the known tightening systems such as Ordinary hand, Torque wrench, Hydraulic or Pneumatic impact wrench, Thermal tightening & Sledge hammering methods.
  • These systems do not allow easily to tightening bolts of large diameter, to the stress level required for maintaining safe operations. However, when it comes to untightening, such as in maintenance, often creates problems and they cannot be dismantled by the way they have been tightened with, and the only solution is to torch cut, when corrosion distorted threads makes it impossible to unload the bolts.
  • NMTG Tensioner Nuts & Bolt is simplest, Inventive & cost-effective solution in Bolted joints. This joint can be tightened without requiring heavy tooling. Also higher sizes can be Installed or removed by Ordinary tooling with minimum workers. If Proper Installed, NMTG Tensioner Nuts & Bolt can provide more life as compared to Conventional Nut & Bolt. Also, If Application is Critical or Special then also NMTG can supply Customized model as per Application requirement.
  • Because of reducing friction on main thread as well as in bearing contact area, almost all theoretical preload can be achieved without fretting corrosion. Also main thread is Tensioned in pure Tension without any Torsion effect.



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