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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. Preload control - Wikipedia

   en.wikipedia.org/wiki/Preload_control

   bolt-strecth method utilizes a hydraulic ram that stretches the bolt by pulling on the threaded section of the bolt that protrudes through the nut. Nut is rotated into position with very small torque applied. Once the external stretching force is removed, the preload is established; heat tightening is based on stretching the bolt by heating it ...

4. Torque screwdriver - Wikipedia

   en.wikipedia.org/wiki/Torque_screwdriver

   A torque screwdriver is a screwdriver with components that ensure tightening to a specified torque, ensuring tightening which is sufficient, but not excessive. An insufficiently tightened screw connection may loosen in operation, and excessive tightening can damage parts; for example, if the nuts holding the wheel of a car in place are too ...

5. 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 ...

6. Hydraulic torque wrench - Wikipedia

   en.wikipedia.org/wiki/Hydraulic_torque_wrench

   A hydraulic torque wrench is a power tool designed to exert torque on a fastener to achieve proper tightening or loosening of a connection through the use of hydraulics. A torque wrench is applied to the nut either directly or in conjunction with an impact socket. Hydraulic torque wrenches apply a predetermined, controlled amount of torque to a ...

7. Tesla recalls nearly 6,000 U.S. cars over potentially loose bolts

   www.aol.com/news/tesla-recalls-nearly-6-000...

   WASHINGTON (Reuters) -Tesla Inc is recalling nearly 6,000 U.S. vehicles because brake caliper bolts could be loose, with the potential to cause a loss of tire pressure, documents made public on ...

8. Tesla recalls thousands of vehicles due to loose bolts

   www.aol.com/tesla-recalls-thousands-model-y...

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9. Washer (hardware) - Wikipedia

   en.wikipedia.org/wiki/Washer_(hardware)

   [4] [11] However, a spring washer will continue to hold the bolt against the substrate and maintain friction when loosened slightly, whereas a plain washer will not. [a] The benefit of spring lock washers lies in the trapezoidal shape of the washer. When compressed to loads near the proof strength of the bolt, it will twist and flatten.