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A4-70 Stainless Steel Hex Bolt Manufacturer, Supplier and Factory In China

Ningbo Teng Qi Fasteners stands as a premier manufacturer specializing in the production of A4-70 stainless steel hex bolts. Meticulously engineered to meet exacting industry standards, our A4-70 hex bolts are crafted from high-quality stainless steel, offering superior corrosion resistance and durability in challenging environments. With a minimum tensile strength of 700 MPa, these bolts exemplify robust mechanical performance, making them ideal for applications where corrosion resistance and strength are critical. Rely on Ningbo Teng Qi Fasteners for precision-crafted A4-70 hex bolts, setting a benchmark for excellence in diverse industrial settings.

A4-70 Stainless steel hex bolts

Specification of A4-70 Bolt:

The specification of an A4-70 hex bolt refers to its specific dimensions, thread pitch, and other mechanical properties. Here’s what the designation “A4-70” signifies:

Product nameA4-70 Hex Bolt
Size:Metric: M1.6-M100
Imperial:0# to 4"
Length:Metric: Up to 800mm
Imperial: Up to 30"
Strength Grade: 700 MPa (min)
Head Type:Hex Head
Industry Standards:DIN931/DIN933/ISO4017/ISO4014
Packaging:Boxes/cartons into wooden pallets
Application:Construction/Automotive/Marine/Aerospace/Food and Beverage Industry/Medical Equipment/Chemical Processing/Water Treatment

FAQ about A2-70 Hex Bolt:

1. Q: What specific quality control measures are in place to guarantee the strength and durability of A4-70 hex bolts?
A: Our quality control processes include material inspections, dimensional checks, and mechanical property testing to ensure the strength and durability of every A4-70 hex bolt.

2. Q: Are your A4-70 hex bolts compliant with international standards for stainless steel fasteners?
A: Yes, our hex bolts are manufactured in strict accordance with international standards such as ISO 3506-1, ensuring they meet or exceed industry requirements for stainless steel fasteners.

3. Q: Can customers request material test reports (MTRs) for A4-70 hex bolts to verify their composition and properties?
A: Absolutely, customers can request material test reports for specific batches, providing detailed information about the composition and mechanical properties of the stainless steel used in A4-70 hex bolts.

4. Q: What testing methods are employed to verify the corrosion resistance of A4-70 stainless steel hex bolts?
A :Our quality control includes salt spray testing to assess and validate the corrosion resistance of A4-70 hex bolts, ensuring they perform reliably in harsh environments.

5. Q: Do you conduct hardness testing, to ensure the overall quality of A4-70 hex bolts?

A: Yes, hardness testing and other relevant tests are part of our quality control procedures to ensure the overall quality and performance of A4-70 stainless steel hex bolts.

Quality control of A4-70 Hex 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.