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China Factory Suppliers of High-Quality Torsional Shear Bolts for Steel Structures - Grade 10.9 Steel Parts
Factory Manufacture Various Bolt Truck Parts Round Head Torsional Shear Bolts
| Place of Origin | Hebei, China |
| Product name | Torsional shear bolts for steel structure |
| Material | Grade 10.9 steel |
| Size | Length 4CM/5CM/6CM/7CM/8CM/9CM/10CM Can be customized |
| Characteristic | Used for bridges and highways |
Bolt Marks and Performance Grades
(1) Logo
Hexagon bolts and screws (thread diameter ≥5mm). A convex or concave mark on the top of the head or a concave mark on the side of the head is required. Including performance grade, factory standard. Carbon steel: Strength grade marking code consists of two numbers separated by “·”. The numerical part before “·” in the marking code indicates the nominal tensile strength. For example, “4″ in grade 4.8 means 1/100 of the nominal tensile strength of 400N/MM2. The meaning of “·” and the digital part after the dot in the marking code indicates the yield ratio, that is, the ratio of the nominal yield point or the nominal yield strength to the nominal tensile strength. For example, the yield point of grade 4.8 products is 320 N/mm2. Stainless steel product strength grade mark is composed of two parts separated by “-”. The symbol before “-” indicates the material. For example, A2 and A4 indicate the strength after a -, for example, A2-70.
(2) Grade
Carbon steel: Metric bolt mechanical performance grade can be divided into: 3.6, 4.6, 4.8, 5.6, 5.8, 6.8, 8.8, 9.8, 10.9, 12.9 a total of 10 performance grades. Stainless steel is divided into 60,70,80(austenite); 50,70,80,110(martensite); 45,60 (ferrite) class iii.
Frequently Asked Questions (FAQ)
Q
What material are these torsional shear bolts made of?
These torsional shear bolts are manufactured from high-quality Grade 10.9 steel, ensuring high tensile strength and durability for heavy-duty structural applications.
Q
What are the primary applications for these round head bolts?
They are primarily designed for steel structures, commonly used in the construction and maintenance of bridges, highways, and heavy truck parts.
Q
What sizes are available for these torsional shear bolts?
The standard lengths include 4CM, 5CM, 6CM, 7CM, 8CM, 9CM, and 10CM. Customized sizes can also be manufactured according to your specific project requirements.
Q
How do you identify the strength grade of carbon steel bolts?
The strength grade of carbon steel is marked by two numbers separated by a dot (e.g., 4.8). The number before the dot represents 1/100 of the nominal tensile strength (e.g., 4 means 400N/mm²), and the number after the dot represents the yield ratio.
Q
What mechanical performance grades are available for metric bolts?
Metric carbon steel bolts are classified into 10 performance grades: 3.6, 4.6, 4.8, 5.6, 5.8, 6.8, 8.8, 9.8, 10.9, and 12.9.