You make use of a torque wrench when you don’t want to over-tighten or under-tighten a nut or bolt. These are ideal for use on regular plumbing nuts typically made with softer metals and therefore more susceptible to wear when regular open-end wrenches are used to turn or tighten them. It’s made for gripping the nut on the end of tubes, and unlike normal box-end wrenches, it has thicker jaws to increase the contact area with the nut. It’s essentially a box-end wrench, but instead of a totally enclosed opening, it has narrow slit that allows it to be slid over tubes. The flare-nut wrench is similar to the box-end wrench. One side of the combination wrench is open-end, the other side is a box-end. Combination WrenchĪ combination wrench is a double-ended wrench that’s both an open-end wrench and a box-end wrench. These are ideal for turning and holding square-shaped nuts and bolts. There are box-end wrenches with eight-point openings. The more the number of points, the more advantage you have of turning the nut or bolt where space for turning is very limited. The six-point opening grips the nut/bolt at 6 points or angles, and the twelve-point opening grips the nut/bolt at 12 points or angles. It’s a one-piece wrench with an enclosed six, eight or twelve-point opening that grips the nuts and bolts. Box-end wrenchĪ box end wrench is also known as a ring spanner because the opening that grips the bolts and nuts looks just like a ring. The open ends of the wrench are usually oriented at an angle around 15 degrees to the handle of the wrench to allow for a greater range of movement especially in small spaces. Like most wrenches, it’s often double-ended, with both sides of the wrench having different size of openings, allowing you to use one wrench to fasten or losing two sizes of nuts or bolts. It grips the two opposite faces of any nuts it used on. It’s a one-piece wrench with a U-shaped opening made to fit the different sizes of nuts and bolts. You’ll surely find one of these in every mechanic or automobile workshop you visit. One of the most common type of wrench you’re going to come across or must have used is the open-end wrench.
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