Cold heading Service

Class8.8 High Strength Hex Bolt Manufacturer, Supplier and Factory In China

Ningbo Teng Qi Fasteners stands as a seasoned expert with two decades of proficiency in manufacturing class 8.8 bolts. Utilizing advanced techniques such as cold heading and hot forging, we deliver a comprehensive size range from M0.8 to M100, meeting diverse industrial needs.

Our material offerings include high-quality carbon steel and alloy steel, ensuring that our class 8.8 bolts exhibit exceptional strength and durability, essential for demanding applications.

With a commitment to quality and reliability, we provide a range of surface treatments such as black oxide for a sleek appearance, galvanization for corrosion resistance, hot-dip galvanization for enhanced durability, and zinc flake coatings for extended protection.

At Ningbo Teng Qi Fasteners, our extensive experience, coupled with cutting-edge manufacturing processes, positions us as a premier provider of class 8.8 bolts, offering solutions that stand the test of time in various industrial settings.

class8.8 zinc plated bolt
class8.8 black oxidation bolt

Specification of Class8.8 Bolt:

The specification of Class8.8 bolt refers to its specific dimensions, thread pitch, and other mechanical properties.

Product nameClass8.8 Bolt
Size:Metric: M0.8-M100
Length:Metric: Up to 800mm
Material:Medium Carbon Steel/Alloy Steel
Strength Grade: 800 MPa (min)
Head Type:Hex Head/Socket Head/Countersunk Head/Round Head/Flat Head
Industry Standards:ISO/ASTM/ASME/DIN/UNI/JIS
Packaging:Boxes/cartons into wooden pallets
Application:Construction/Automotive/Marine/Aerospace/Food and Beverage Industry/Medical Equipment/Chemical Processing/Water Treatment

FAQ about Class8.8 Bolt:

1. Q: What distinguishes class 8.8 high-strength bolts from other grades, and why choose them for specific applications?
A: Class 8.8 bolts are characterized by their high tensile strength. They are suitable for applications requiring robust and reliable fastening solutions.

2. Q: How do you ensure the high tensile strength and reliability of your class 8.8 high-strength bolts?
A: Our bolts undergo stringent testing, including material inspections, dimensional checks, and mechanical property assessments, ensuring they meet or exceed the required tensile strength standards.

3. Q: Can customers specify the material type for their class 8.8 high-strength bolts, and what are the available options?
A: Yes, we offer customization with material options including carbon steel and alloy steel to meet the specific requirements of different applications.

4. Q: What is the significance of surface treatments like black oxide, galvanization, and zinc flake coatings for class 8.8 high-strength bolts?
A: These treatments enhance corrosion resistance and durability, making our bolts suitable for a wide range of environments and applications.

5. Q: Can customers request specific sizes or threading for their class 8.8 high-strength bolts?

A: Absolutely, we provide customization options for sizes and threading to meet the unique requirements of our customers.

Quality Control of Class8.8 Bolt:

Control MethodDetail
Material Inspection:Verify the material's composition, heat treatment, and quality upon receipt. Conduct metallurgical analysis to ensure the material properties meet the standards.
Process Control:Implement strict process control measures for heat treatment, machining, threading, and any other manufacturing steps. Maintain consistent process parameters to ensure uniform quality.
Inspection Points:Introduce inspection points at various stages of manufacturing to check for defects, dimensions, and quality. Inspect threading, dimensions, surface finish, and other critical parameters.
Sampling and Testing:Regularly sample products for testing, such as tensile testing, hardness testing, and metallurgical analysis, to ensure they meet the required specifications.
Thread Inspection:Thoroughly inspect threading using proper thread gauges to ensure accurate dimensions and fit with mating components.
Traceability:Implement a traceability system to track each fasteners journey from raw material to final product. This aids in accountability and recalls if necessary.