In a toolbox, wrenches usually find a permanent place as they can be used for a variety of projects and tasks. Their wrenches’ type, size, shape, and type of measurement is what make these different from one another. One also need to consider the set’s strength and durability. If the wrench is used for strenuous work, it’s better to consider a variety that would not break or bend when used.
A lot variety of wrenches are available in the market – crescent or open ended, box, combination, adjustable, offset, pipe, stubby and torque. The crescent wrenches, also referred to as "C" spanners are available in various sizes. These are the most common and versatile wrenches which are designed to engage bolt heads or nuts from the side. The open-ended Wrench is usually made of cast iron, alloy steel or wrought iron. The box wrench, also known as the ring spanner is usually made of steel. It is basically used to loosen or tighten bolts and nuts. It has a completely enclosed head that makes it stronger than a crescent wrench but it is harder to use. The head of the box wrench have six or 12 points that fit properly on the flat of a bolt. Also, the length of a box Wrench is directly proportional to the bolt’s size for which it is manufactured. Thus, too much torque is not needed to be applied at the time of tightening. However, most of the spanners are suitable for light work only and they are less durable.
A combination wrench is boxed at one end and open ended at the other end. Both of the sides are same in size. While the open end unscrew the nuts speedily, the stronger box end loosens the nuts. An adjustable wrench or Lug are usually open ended and has one jaw that is movable and a not confined to a solo thread system. They are available in various designs like the monkey wrenches, the adjustable crescent Wrench which is smaller in size, etc. The offset variety extends its head about half inch than the wrench end to provide space for the operator’s knuckles.
The pipe Lug is similar to the adjustable wrench but is designed to use for objects like damaged pipework or nuts. For using these wrenches, pressure should always be applied in the direction of the jaw’s opening. These jaws provide a better grip on a flat surface. The stubby type of wrenches are mostly designed to work in limited spaces and are shorter in length. A torque Wrench as the name suggests is used for applying a amount of torque to bolts and nuts. They have a gauge that displays the torque applied. The mechanisms can be electronic or manual.