There are various instruments developed expressly to tighten or remove the number of sides (called flats) on a nut or bolt head. Each variety has distinct advantages and disadvantages, however there are some differences between box-end, open-end, and combination wrenches. The parts that contact the nut or bolt head are called the faces.
The face of a box-end wrench is flat, while the face of an open-end wrench is angled. Combination wrenches have both a flat and an angled face. Because they can be used to turn either a box-end or an open nut, they can be made from steel with either a flat or an angled surface; however, most are made from aluminum for its durability. Dimensions of faces should be considered when selecting tools for specific applications. Flat faces tend to be better at turning small amounts of material than large ones, while larger faces are needed to turn large amounts.
The face of a socket wrench is usually flat, but it can also be angled if desired. Angled sockets are useful for reaching bolts in hard-to-get places or when multiple bolts need to be tightened or loosened simultaneously. They can also help prevent the loss of torque over time if the angle becomes worn down. Socket wrenches come in several sizes with each size being able to fit a bolt with a diameter 1/4 inch less than or equal to its own diameter.
Box Wrenches and Open-Ended Wrenches These instruments are used to loosen and tighten fasteners such as nuts and bolts. The box end has a propensity to fall off, but the open end is more versatile because it only has to make contact with two sides of the nut or bolt. This tool is most commonly used on household objects that need their screws or bolts tightened or removed.
The box end is designed to fit into small spaces where its flat face can be used to apply pressure to the head of the screw or bolt. The open end is used when you need to work on larger objects or objects that may be blocked by other materials. The open end also provides better visibility of the process while the box end would cause shadows if used during construction or repair projects.
Both tools use a standard size socket to achieve a secure grip on their respective ends. A box end socket will accommodate both large and small objects because it provides more surface area for gripping than does an open end version.
Open end wrenches are available in different sizes for various applications. Standard sizes for open end wrenches include 1/4", 3/8" and 5/16". Some manufacturers produce specialty open ends such as trunion open ends which are designed to work on fasteners with curved heads or slotted holes.
Box end wrenches are usually sold in pairs.
The wrench's ends are slightly offset. Box-end wrenches often provide a more secure grip than open-end wrenches. The thin wall of the jaw also makes it simpler to reach nuts in confined areas, however these wrenches cannot be used in all scenarios since they must be slipped on over the end of the bolt. Also, box-end wrenches are not as flexible as open-end wrenches.
Box-end wrenches feature nut-enclosing ends and 6, 8, 12, or 16 points inside the head. Early box and socket wrenches were designed to fit just a certain nut or screw with smooth surfaces on the head. One or both ends of the open-end wrench may have rectangular slots. The tool can be used by placing it over the object and turning it clockwise or counterclockwise.
Today's box wrenches are generally interchangeable with other brands and styles of wrenches. They are available in sizes ranging from 1/4 inch to 3 inches for use on nuts and screws.
Nuts and screws are small objects that may need to be removed from a bolt or hole to enable you to work on other parts of the device. Using a box wrench is much easier than trying to turn a regular open-ended wrench because you do not have to align the open end with the hole or slot as with an ordinary wrench.
Also called spanner tools, they are hand tools that include a ring of teeth around one or more cylinders. The tool is used to tighten or loosen nuts and bolts. Box wrenches are useful for working on small objects that would be difficult or impossible to handle with standard wrenches.
They come in various lengths depending on the size of the nut or bolt you need to work on.