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.
Specification of Class8.8 Bolt:
The specification of Class8.8 bolt refers to its specific dimensions, thread pitch, and other mechanical properties.
| Product name | Class8.8 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:
| Inspect Item | Detail |
|---|---|
| Dimensional Inspection | Critical dimensions such as bolt diameter, head width, head height, bolt length and thread length are checked using calibrated measuring equipment. Inspection is carried out according to the applicable dimensional standard or customer drawings to ensure consistent fit and interchangeability. |
| Thread Inspection | External threads are inspected using calibrated GO and NO-GO thread gauges to verify thread profile, pitch and dimensional conformity. Additional measurements can be performed when tighter thread tolerances or specific customer requirements apply. |
| Mechanical Testing | Mechanical properties are verified according to the specified material and strength grade. Depending on the applicable standard, testing may include tensile strength, yield strength, hardness and other required mechanical tests, with test results documented in the relevant inspection or material reports. |
| Surface & Coating Inspection | Bolt surfaces are inspected for appearance, defects, coating uniformity and other specified requirements. For coated fasteners, coating thickness and adhesion or other applicable coating characteristics can be checked according to the specified surface treatment standard. |
| Final Inspection & Testing | Before shipment, finished hex bolts undergo final inspection to confirm dimensions, thread quality, mechanical requirements, surface condition, marking and packaging. Inspection records and test reports can be provided according to the order specification and customer requirements. |