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Wrench |
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wrenchor spannerTool, usually operated by hand, for tightening bolts and nuts. A wrench basically consists of a lever with a notch at one or both ends for gripping the bolt or nut so that it can be twisted by a pull at right angles to the axes of the lever and the bolt or nut. Open-end wrenches have ends with straight-sided slots that fit over the part being tightened; box-end wrenches have ends that enclose the nut and have six, eight, 12, or 16 points inside the head. A socket wrench is essentially a short pipe with a square or hexagonal hole and either a permanent or a removable handle. wrench 1. an injury to a limb, caused by twisting 2. a spanner, esp one with adjustable jaws wrench [rench] (engineering) A manual or power tool with adapted or adjustable jaws or sockets either at the end or between the ends of a lever for holding or turning a bolt, pipe, or other object. (mechanics) The combination of a couple and a force which is parallel to the torque exerted by the couple. wrench A hand tool consisting of a metal handle with a jaw at one end which is designed to fit the head of a bolt or nut (or to grasp a pipe or rod) so that it may be turned. Wrench a hand tool that is widely used in fitting and assembling operations to screw and unscrew bolts, nuts, and other threaded connections. A wrench has a jaw or contoured projections and recesses that grip the objects. The principal varieties are simple wrenches with single and double ends, lever types, socket wrenches, and adjustable (monkey) wrenches. Torque wrenches (both self-releasing and indicator types), which are used when assembling vital screw connections on instruments, motors, lathes, and so on, are the most advanced and satisfactory types of wrench. Indicating wrenches have a torque indicator that gives a light or sound signal when the desired torque value is reached. Self-releasing wrenches automatically disengage when the specified torque is reached, thus avoiding stripping the threads. Nut wrenches are extensively used in automated assembly. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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No references found | The most usual shapes are called open-end wrench and box-end wrench. A box-end wrench is a more advanced wrench and is typically used with nuts or bolts in hexagonal shape. |
Box-end wrench |
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