| Material: | High Strength Steel |
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| Type: | Hexagon Head |
| Connection: | Common Bolt |
| Customization: |
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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| Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Audited Supplier Product Introduction Table
| Item | Description |
|---|---|
| Product Name | 8.8 High-Strength Black External Hex Bolt |
| Standard | GB5783 |
| Material | 20, 35, 45 steel, or 40Cr alloy structural steel that meets GB/T 699 standards |
| Strength Grade | 8.8 |
| Surface Treatment | Black Oxide Finish (Blackening Treatment) |
| Thread Standard | Complies with GB5783 standard |
| Diameter Range | M6~M30 |
| Length Range | 10mm - 300mm |
| Features | 1. High strength, tensile strength ≥800MPa, yield strength ≥640MPa |
| 2. Black oxide finish for improved corrosion and wear resistance | |
| 3. Precision-controlled dimensions ensure proper bolt-nut fit | |
| 4. Widely used for fastening connections in various mechanical equipment and structures | |
| Application Scenarios | Suitable for industrial machinery, automotive manufacturing, construction engineering, bridge construction, wind power equipment, shipbuilding, and more |
| Certification Standards | Complies with relevant international and domestic quality certification standards |
| Packaging | Packed in cartons or wooden cases for safe transportation |
| Shelf Life | Typically up to 12 months, depending on storage conditions |
| Precautions | 1. Please inspect the bolt for damage before installation |
| 2. Ensure proper bolt-nut pairing to avoid thread mismatch | |
| 3. Avoid overloading to prevent bolt damage | |
| 4. Store in a dry, ventilated environment to prevent rusting |
Introducing our 8.8 High-Strength Black External Hex Bolt, a robust and reliable fastening solution for a wide range of applications. Manufactured from high-quality alloy steel, these bolts meet the GB5783 standard, ensuring durability and safety.
The black oxide finish not only gives the bolts an appealing look but also provides excellent corrosion and wear resistance, ensuring long-lasting performance even in harsh environments. With a diameter range of M6 to M30 and lengths from 10mm to 300mm, we offer a wide selection to suit your specific needs.
The precision-controlled dimensions of our bolts ensure a perfect fit with the corresponding nuts, eliminating the risk of thread mismatch. Whether you're working on industrial machinery, automotive components, or construction projects, our 8.8 High-Strength Black External Hex Bolts are an ideal choice for ensuring secure and reliable fastening.
Backed by our commitment to quality and reliability, these bolts are sure to meet your expectations. Order now and experience the difference!
Suppliers with verified business licenses
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