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Description Image Stock
SUP-325-4/W SuperBolt Parts Superbolt Torquenut MT 
Torquenut / Standard Mechanical Tensioners with Hardened Washer 
325 = 3.25 Bolt / Stud Diameter 
4 = 4 TPI / Threads Per Inch 
/ W = Hardened Washer & JL-G Lubricant 
5.45 Inch OD 9/15
- 0 0.00 406.13
Prices are subject to change without notice. Last updated: 23-Oct-2016 01:31:15 PM (EST)
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What is a multi-jackbolt tensioner?

A "Superbolt" or "multi-jackbolt tensioner (MJT)" is a direct replacement for hex nuts, covered nuts, bolts, etc. They spin onto your existing bolt or stud and provide a better way to bolt up your joint. They consist of three components, shown above.
1. A hardened washer protects your equipment and provides a hardened, flat surface for the jackbolts to "push" against.
2. The nut body spins on your existing bolt or stud and seats against the washer hand tight (Superbolt® nut bodies are typically round).
3. The Jackbolts thread through the nut body and are used to tighten the joint in pure tension, using ordinary hand tools.
Click here to learn more
Nut-style tensioners

Nut-style 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.
Bolt-style tensioners

Bolt-style tensioners
Bolt style Superbolt multi-jackbolt tensioners (MJTs) replace existing studs or bolts. Ideal for applications with tapped holes, or where threading a stud into a nut would be impractical. The outside diameter is smaller than a nut type tensioner on a stud, allowing MJTs to fit into tighter areas.

Flexnuts are used in combination with Superbolt tensioners and are designed to flex out at the bottom and flex in toward the top of the nut. This distributes the bolt load along many threads, adds elasticity, and prevents stress concentrations in the first few threads.
SMX Mill Motor Nuts

SMX Mill Motor Nuts
SMX Mill Motor Nuts are used to replace standard mill motor armature nuts supplied by electric motor manufacturers. SMX tensioners are available for most standard motor frame sizes. Preload matches the hub stress capacity of brake wheels and pulleys.
This web site is owned and operated by Brake Products, Inc.
Brake Products, Inc.   16751 Hilltop Park Place
  Chagrin Falls, Ohio 44023
  Phone: (440) 543-7962
  Fax:     (440) 543-7963
  Federal ID #: 34-1473351
  CAGE Code: 1QTP8
Supplier of Industrial Brake Parts Since 1985