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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. Investigators home in on hardware in probe of midair Alaska ...

    www.aol.com/news/united-finds-bolts-tightening...

    Amid statements from airlines that their technicians found loose bolts on the same model of Boeing plane involved in a midair emergency, federal officials indicated an increasing focus on the ...

  4. Exclusive-Boeing presses suppliers on tightening bolts after ...

    www.aol.com/news/exclusive-boeing-presses...

    WASHINGTON (Reuters) -Boeing issued a bulletin to its suppliers late last week that laid out practices to ensure bolts are properly torqued after multiple airlines reported loose hardware during ...

  5. Cheater bar - Wikipedia

    en.wikipedia.org/wiki/Cheater_bar

    Due to the potential problems associated with a cheater bar or snipe, some situations may require an alternative to loosening and removing threaded pipe, screws, bolts or other fasteners. Hydraulic Chain Pipe Wrench – A hydraulic driven wrench which will safely remove threaded pipe from other threaded coupling, valve, etc. while the other ...

  6. Screw - Wikipedia

    en.wikipedia.org/wiki/Screw

    A lathe of 1871, equipped with leadscrew and change gears for single-point screw-cutting A Brown & Sharpe single-spindle screw machine. Fasteners had become widespread involving concepts such as dowels and pins, wedging, mortises and tenons, dovetails, nailing (with or without clenching the nail ends), forge welding, and many kinds of binding with cord made of leather or fiber, using many ...

  7. Loose bolts found on grounded Boeing 737 Max 9 planes after ...

    www.aol.com/issues-reported-boeing-737-max...

    The airline operates 79 Max 9 planes. Reutersquoted a source familiar with the matter as saying that United had identified nearly 10 aircraft with loose bolts during its initial inspections.

  8. Set screw - Wikipedia

    en.wikipedia.org/wiki/Set_screw

    Isometric projection of a grub screw with a hex socket head.. Set screws are not always the best way to resist the torque of driven shafts. To reduce the chance of slipping and to increase load capacity, a detent (often called a "flat") may be milled or ground at the part of the shaft where the set screw's point contacts.

  9. Boeing urges 737 Max inspections for possible loose bolt

    www.aol.com/boeing-urges-737-max-inspections...

    The airplane maker is urging airlines to inspect rudder control systems on the planes.

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