Wrenches are commonly used tools for mechanical components, with a wide range of applications, suitable for multiple fields such as machining, repair, and installation. There are various types and specifications of wrenches, and the following text will introduce them.
1、 Classification of wrenches
1. Classified by purpose: ordinary wrench and special wrench.
A regular wrench is a common large and small end wrench, which can be selected according to the size of the bolt and has a wide range of uses.
Special wrenches include open end wrenches, ring wrenches, cross wrenches, spring wrenches, single end wrenches, double end wrenches, universal wrenches, etc. Due to their different structures, they are suitable for specific operations.
2. Classified by structure: open type and sleeve type.
Open end wrenches are relatively simple, with only one adjustable opening, suitable for tightening bolts with large space.
A socket wrench is composed of a sleeve and is suitable for bolts that require less tightening space. It is also structurally divided into two types: straight and bent.
3. Classified by material: iron and alloy steel.
Iron wrenches are relatively inexpensive, but have lower hardness and are not durable enough, making them only suitable for simple household operations.
Alloy steel wrenches, due to their good material and high strength, have longer working efficiency and service life, and are also relatively easy to maintain.
2、 Specification and model of wrench
The specifications and models of wrenches are classified based on their applicable diameter size, and the internal diameter labeling method is commonly used. Taking commonly used open end wrenches as an example, the specifications and models are labeled as 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm, 25mm, 26mm, 27mm, 28mm, 29mm, 30mm. Each number in the above specifications and models represents the width of the opening. For example, 10mm represents a width of 10 millimeters for the opening, which can be used to tighten or remove bolts or nuts, etc.
In general, there are many types and specifications of wrenches, so when choosing, it is important to choose according to your own needs. Meanwhile, whether it is a regular wrench or a special wrench, attention should be paid to safety during operation to avoid accidents caused by improper operation.
