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  2. Bolted joint - Wikipedia

    en.wikipedia.org/wiki/Bolted_joint

    Torque charts are available to specify the required torque for a given fastener based on its property class (fineness of manufacture and fit) and grade (tensile strength). Spring Analogy for a Bolted Joint. When a fastener is tightened, a tension preload is develops in the bolt, while an equal compressive preload forms in the clamped parts.

  3. Preload (engineering) - Wikipedia

    en.wikipedia.org/wiki/Preload_(engineering)

    Preload in such cases is important for several reasons. First, a tightened bolt experiences only a small fraction of any external load that will be applied later, so that a fully tightened bolt can (depending on the exact application) sustain a much greater load than a loosely tightened bolt.

  4. Preload control - Wikipedia

    en.wikipedia.org/wiki/Preload_control

    Multiple techniques exist for preload control to ensure that the tension in the bolt is close to the one specified in the design (some bolt-to-bolt statistical variations are inevitable): [1] torque-controlled tightening is a simple and most popular approach: the fastener is tightened until the torque limit is reached.

  5. Embedment - Wikipedia

    en.wikipedia.org/wiki/Embedment

    In critical fastener joints, embedment can mean loss of preload. Flattening of a surface allows the strain of a screw to relax, which in turn correlates with a loss in tension and thus preload. In bolted joints with particularly short grip lengths, the loss of preload due to embedment can be especially significant, causing complete loss of preload.

  6. Torque-to-yield fastener - Wikipedia

    en.wikipedia.org/wiki/Torque-to-yield_fastener

    It is therefore beneficial in high-frequency high-load situations with a higher risk of fatigue related failure, like a bolted down cylinder head, to use torque to yield bolts. [ citation needed ] The torque applied to the fastener must be determined such that it does not contribute to a service condition where the fastener enters a low-cycle ...

  7. List of Ford bellhousing patterns - Wikipedia

    en.wikipedia.org/wiki/List_of_Ford_bellhousing...

    1.8, 2.0/2.3 had the same bellhousings bolt patterns with differences from year to year to be wary of. The Mazda transmission 5M** does not "directly replace" the Mitsubishi transmissions as there are shifter spacing differences in the floorboard. The Mitsubishi transmission was made to fit Mustang IIs and was shoehorned into the early Rangers.

  8. Common Berthing Mechanism - Wikipedia

    en.wikipedia.org/wiki/Common_Berthing_Mechanism

    The bolt was qualified to a preload (F p*) of 19,300 lbf (85,900 N), actuated by torque (τ) from an actuator (3) having a maximum sustained output of 1,600 lb⋅in (180,000 mN⋅m). [105] The effective preload can change (F cte ) after berthing by the difference between coefficients of thermal expansion of bolts and flanges.

  9. Direct tension indicator - Wikipedia

    en.wikipedia.org/wiki/Direct_tension_indicator

    The number of instances the bolt shank can be reached by the feeler gage is then compared to either the results of a pre-installation verification procedure or the manufacturer's instructions. Applied Bolting Technology Products, LLC manufactures self-indicating DTIs, which are a subset of the standard DTIs described above.

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