Today, A3-70 bolt manufacturer takes this opportunity to learn with everyone about the common types of bolts?
If A3-70 bolts are classified according to their head shape, they can be hexagonal, rounded, countersunk, and so on. The commonly used ones are external hexagon bolts and internal hexagon bolts. In addition, bolts are also a common type of connection and belong to detachable connections.
1. A3-70 hexagon bolt
There are actually many different names for this type of bolt, such as: external hexagon screw, external hexagon screw, also known as external hexagon bolt. It is divided into three types: A, B, and C. The first two types are refined bolts that are less commonly used. Generally speaking, ordinary bolts are C-grade bolts that can be directly used in building structures or certain mechanical industries, with special purposes.
2. A3-70 hexagon socket bolt
The head of an internal hexagonal bolt is circular on the outside and a hexagonal recess in the middle. The most common type of internal hexagonal bolt is a cylindrical head. It is commonly used in machinery, with the main functions of fastening, disassembling, and not easily slipping.
3. A3-70 double headed bolt
Double headed bolts can also be called double headed screws or double headed bolts. It is generally used for the fixed connection function of connecting machinery, with threads on both ends and a screw in the middle, with thick and thin options. Generally used for large-scale mining machinery, bridge installation, automobiles, motorcycles, boiler steel structures, and other large buildings.
4. A3-70 single head bolt
Of course, this type of bolt is also one of them. The surface is generally galvanized or hot-dip galvanized or stainless steel shock polished, and the materials include Q235, 45 # steel, SUS304, SUS316, etc. The use of single head bolts is more flexible than that of ordinary bolts. The head and screw are composed of two parts, which are usually used in conjunction with nuts to connect components with holes on both ends. This connection method is called bolt connection. And both ends are detachable, separating the two components, so it is also called a detachable connection.
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