Hot dip galvanized hexagon bolts can be customized
Product Description
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There are many different names for the outer hexagonal bolt, for example, it can be called the outer hexagonal bolt, for example, it can be called the outer hexagonal bolt. It can also be called an outer hexagonal bolt. This all means the same thing. It’s just that personal habits are different. After hot galvanizing surface treatment, anti-corrosion effect is achieved.
1. common bolts are divided into a, b and c. The first two are refined bolts, which are seldom used. Generally speaking, ordinary bolts refer to Class C ordinary bolts.
2. Class C common bolts are commonly used in some temporary connections and connections requiring disassembly. Common bolts commonly used in building structures are M16, M20 and M24. Some crude bolts in the mechanical industry may have large diameters and special purposes.
high strength friction grip bolt
3. The material of high strength bolt is different from that of ordinary bolt. High strength bolts are generally used for permanent connections. Commonly used are M16~M30.
The parallel hanging plate is used for the connection between single plate and single plate, and between single plate and double plate. It can only change the length of the assembly, but not the connection direction. The parallel hanging plate is mostly made of steel plate by stamping and cutting process. The performance grade of outer hexagon bolt consists of two numbers, which respectively represent the nominal tensile strength value and yield strength ratio of bolt material.
For example, bolts with performance grade 4.6 mean:
a. Bolt material: nominal tensile strength reaches 400MPa;
b. The yield ratio of bolt material is 0.6;
c. The nominal yield strength of bolt material is up to 400 × 0.6 = 240mpa grade
High strength bolts with performance grade of 10.9 can meet the following requirements after heat treatment:
a. Bolt material, nominal tensile strength up to 1000MPa;
b. The nominal yield strength of bolt material is up to 1000 × 0.9 = 900MPa grade
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