hexagonal-point bolt

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• Screw — This article is about the fastener. For other uses, see Screw (disambiguation). Screws come in a variety of shapes and sizes for different purposes. U.S. quarter coin (diameter 24 mm) shown for scale. A screw, or bolt, is a type of fastener… …   Wikipedia

• Wrench — For other uses, see Wrench (disambiguation). A set of chrome vanadium metric wrenches, open at one end, box/ring at the other. This type is commonly known as a combination wrench. A wrench or spanner is a tool used to provide grip and mechanical… …   Wikipedia

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• wrench — wrencher, n. wrenchingly, adv. /rench/, v.t. 1. to twist suddenly and forcibly; pull, jerk, or force by a violent twist: He wrenched the prisoner s wrist. 2. to overstrain or injure (the ankle, knee, etc.) by a sudden, violent twist: When she… …   Universalium

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• lag screw — noun a heavy woodscrew with a square or hexagonal head that is driven in with a wrench • Syn: ↑lag bolt • Hypernyms: ↑woodscrew * * * noun Etymology: lag (VI); from its original use in securing lags to drums or cylinders : a …   Useful english dictionary

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