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  • What is Torque?
    efficiency and will resist coming undone. However, if the tension is too low, the nut could vibrate or work loose. If the tension is too high (overstretched), the bolt could break. Ever y bolt has a correct optimum torque/tension figure for each fastening application. It is important to have these figures
  • What is Torque?
    Torque is a 'turning' or 'twisting' force and differs from tension which is created by a straight pull. However, torque is used to create tension. How? As the nut and bolt are tightened the two plates are clamped together. The thread angle in the bolt converts the force applied into tension
  • Custom bolt tensioners take the stress off users
    fasteners can prevent such failures. Here, tension rather than torque is becoming the preferred method to tighten fasteners because it gives more accurate and repeatable loads. It works like this: A stud tensioner hydraulically applies a tensile load to a bolt or stud. The tensioner maintains this load
  • Learn the Basics of Torque Wrenches
    The torque wrench's main purpose: to tighten a bolt or nut with the correct amount of torque while avoiding over-tightening.
  • Coatings and Torque Tension
    In an automated installation, the most positive way to insure proper clamp is with machines that read torque rate of change and angle curve. This reads both the mechanical properties of the bolt and the properties of the joint, assuring no broken bolts with correct clamp and yield. These machines
  • Performing the Marking Torque Test Method
    Controlling torque is a critical element for tightening threaded fasteners. Validating that a screw or bolt is properly installed ensures quality performance and reduces failures. The process to measure torque is relatively easy. It can be conducted either dynamically during the fastening process
  • Tightening Bolted Joints with Torque Tools
    and the bolts preload. A calibrated torque tool should therefore be used for the final tightening operation or inspection. Specify the correct tightening torque: Whenever feasible, specify the tightening torque based upon actual test results rather than a theoretically calculated value. Experimental
  • Hydraulic Torque Wrenches...It's All about the Right Prestress
    In several branches of industry high demands are made with regard to (heavy) bolted joints. To achieve this a precision tool is required which provides the certainty of a good joint, but especially the correct bolt prestress. The appropriate tool for this purpose is a hydraulically driven torque
  • The 'Friction Flaw' with Fastener Torque Settings Charts
    Given the complexities and variances involved with even properly interpreting a torque settings chart, it's not surprising that achieving proper design tension using torque measurements is like shooting at a moving target. This is why reliance on torque values alone should no longer
  • Understanding the Nut Factor in Threaded-Fastener Torque-Tension Relationship
    Engineers use a "nut factor " to relate a bolt's installation torque to the tension on it. But they need to understand the friction-related variables that contribute to the nut factor to accurately design bolted joints. * The experimentally determined nut factor, , consolidates the friction effects
  • Application Note: Bolt Fastening for Aerospace & Manufacturing
    An Aerospace Company was working on a test plan that involved taking torque & compression measurements on fasteners with varying joint materials. The system required both high and low sampling rates, in addition to the capability of precisely measuring force and torque simultaneously. They required

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