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2. Multi-jackbolt tensioner - Wikipedia

   en.wikipedia.org/wiki/Multi-jackbolt_tensioner

   Multi-jackbolt tensioners (MJTs), registered under the trademark Superbolt or Supernut, are designed to decrease the torque required to tighten large bolted joints. One of the major problems associated with traditional bolt tightening methods is as the diameter of the bolt increases, the amount of torque required to tighten it increases in the third power of the diameter. [1]

3. U-bolt - Wikipedia

   en.wikipedia.org/wiki/U-bolt

   A U-bolt is a bolt in the shape of the letter U with screw threads on both ends. U-bolts have primarily been used to support pipework, pipes through which fluids and gasses pass. As such, U-bolts were measured using pipe-work engineering speak. A U-bolt would be described by the size of pipe it was supporting. U-bolts are also used to hold ...

4. Threaded rod - Wikipedia

   en.wikipedia.org/wiki/Threaded_rod

   The allowable tensile force for a non-undercut threaded rod is defined by the American Institute of Steel Construction (AISC) as [8] =, where d is the nominal diameter, and F u is the ultimate tensile strength of the material.

5. Marman clamp - Wikipedia

   en.wikipedia.org/wiki/Marman_clamp

   A Marman clamp is a type of heavy-duty band clamp; it allows two cylindrical objects to be clamped together end-to-end with a ring clamp. It is sometimes also known as a "Marman ring". It consists of a circular strap with an interior V-shaped groove. Tension is applied to the strap with a threaded bolt and nuts connecting to the ends of the strap.

6. List of screw and bolt types - Wikipedia

   en.wikipedia.org/wiki/List_of_screw_and_bolt_types

   A special type of bolt that is set into concrete, with screw threads protruding above the concrete surface to accept a nut. breakaway bolt: A breakaway bolt is a bolt with a hollow threaded shank, which is designed to break away upon impact. Typically used to fasten fire hydrants, so they will break away when hit by a car. Also used in aircraft ...

7. T-slot nut - Wikipedia

   en.wikipedia.org/wiki/T-slot_nut

   A heavy-duty T-slot nut with a M12 bolt is rated to support 10000 N (about 1 imperial ton at rest). [ 2 ] Profile 40×40 (40 mm by 40 mm, with 8 mm grooves) extruded aluminum profile and the T-slot nuts to fit into them comprised the first modular system developed for use in mechanical engineering in 1980 by item Industrietechnik. [ 3 ]