What Is a Hex Key Wrench?
A hex key wrench is a metal bar-shaped tool with a regular hexagonal cross-section, used to tighten bolts and screws with regular hexagonal holes.
There are different types of hex key wrench handles, each with its own characteristics. A hex key wrench can only be used with a wrench that fits the exact size of the hole. Due to the large contact area between the wrench and the hole, it is more difficult for the bolt to break and easier to transmit force compared to a screwdriver, which is a tool for tightening the same hole. Many products are sold as a set of 6~7 hexagonal wrenches of different thicknesses to accommodate holes of various sizes.
Uses of Hex Key Wrenches
Hex key wrenches come in various shapes, such as T-shape, L-shape, and screwdriver type, and their tips are also available in various thicknesses.
The most common type of hex key wrenches is the L-shaped hex key wrenches, which are the most versatile and are suitable for permanent use in the home. The T-shaped hex key wrenches are suitable for continuous long-time use and are used for adjusting road bikes, etc. The T-shaped hex key wrenches are the most common type of hex key wrenches, which are the most versatile type of hex key wrenches and are suitable for permanent use in the home. Screwdriver-type hexagonal wrenches can be tightened strongly and are suitable for DIY and other work where safety is important.
How to Select Hex Key Wrenches
Here are some important points to consider when selecting hex key wrenches:
- Shape of the handle
As described in the “Uses of Hex Key Wrenches” section, hex key wrenches have different shapes of handles such as T-shape and L-shape, each of which is suitable for different purposes. When choosing a hex wrench, choose a shape that matches the scene in which you will use it. If you expect to use the wrench in various situations, you should buy an L-shaped wrench. - Wrench thickness
Hex key wrenches cannot be used unless the metal bar fits perfectly in the hole, so the thickness of the wrench must change according to the size of the hole. Since there are various sizes of holes for bolts and screws into which wrenches are inserted, be sure to select a wrench of the required thickness. - Length of the wrench
There are various lengths of wrenches. The longer the wrench, the stronger the force required to tighten the bolt. Therefore, a longer wrench is suitable for tightening hard bolts. On the other hand, short wrenches are easy to carry and store. If you intend to use the wrenches at home, it is recommended to choose a wrench with a short wrench and a set of multiple wrenches.