Superbolt® - Nut-style multi-jackbolt tensioners

Superbolt multi-jackbolt tensioners (MJTs) replace existing hex nuts. Only hand tools are required for installation and removal of any size tensioner. Safe, accurate and economical! We have a wide range of standard series, as well as an unlimited capacity to create special designs to meet your unique needs.

Superbolt products are an innovative technology for tightening large bolts & studs. MJTs have been proven and established as a preferred solution for bolting in every major industry, all over the world. Superbolt tensioners offer you simple and cost effective tightening of large size bolts. Your joints can be tightened with high accuracy without requiring specialized skills or heavy tooling. MJTs ensures a profitable life cycle cost by improving the bolt design for OEM manufacturers, ensuring reliable operation and by facilitating maintenance procedures.