Superbolt was the world’s first to revolutionize nuts and bolts with multi-jackbolt tensioning (MJT) technology. Our technology has been proven in tens of thousands of successful installations and we continue to develop a multitude of solutions to solve the next generation of bolting challenges.


  • Thread Size: 3"
  • Threads Per Inch (TPI): 8
  • Quick and easy installation and removal
  • Only hand tools required
  • Safe method for installation
  • Fits in restricted areas
  • Profitable life-cycle cost
  • Reliable operation
  • Simple maintenance procedure


Download Full Product Specifications


Superbolt multi-jackbolt tensioners take high preload requirements and break them down into manageable torques using the jackbolts threaded through the nut body. They remain easy to install, even on larger sizes, compared to standard hex bolts.

CY-300-8 Model Superbolt Nut-style Tensioner

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    Hours Of Operation


    8 am - 6 pm


    10 am - 4 pm





    Mailing Address

    12335 Kingsride Lane #422

    Houston, TX 77024


    1106 Wisterwood Dr. Unit H

    Houston, TX 77043

    5408 E Loop 250 N Unit B Midland, TX 79705