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Carbon Steel Black DIN933 Grade10.9 Full Thread Hex Bolt

Material:carbon steel 10.9Grade 
Standard:DIN933
Size: M5-M24
Min Order: 50pcs   
Sample: Free sample
Delivery time:3-30 Days
Availability:
Quantity:
Carbon Steel Black DIN933 Grade10.9 Full Thread Hex Bolt
Carbon Steel Black DIN933 Grade10.9 Full Thread Hex Bolt
Carbon Steel Black DIN933 Grade10.9 Full Thread Hex Bolt
Carbon Steel Black DIN933 Grade10.9 Full Thread Hex Bolt
Carbon Steel Black DIN933 Grade10.9 Full Thread Hex Bolt
Carbon Steel Black DIN933 Grade10.9 Full Thread Hex Bolt
  • DIN933

  • HINA

  • HINA2024112804

Carbon Steel Black DIN933 Grade10.9 Full Thread Hex Bolt



Product Description

Black Hex Bolt is a common mechanical connector, mainly used to connect or fix different parts. It is usually made of metal materials such as carbon steel or alloy steel, and is blackened to give it a black appearance. The following is a brief introduction to black hex bolts, including definitions, application scenarios and features.


A black hex bolt is a bolt with a hexagonal head. The head shape is hexagonal and is usually fastened with a nut or screwed directly into a hole. Its surface is blackened and has a certain degree of corrosion resistance. It is usually used in environments that require a certain degree of rust prevention.

DIN933

Product Details

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Production Process

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Application of Black Hex Bolt

Black hex bolts are widely used in multiple industries and scenarios, including but not limited to:

- Machinery manufacturing industry: used to fix machine parts.

- Automobile industry: used for the connection and fixation of automobile parts.

- Construction industry: used for the connection of steel structures and other building materials.

- Electrical equipment: used for the installation and fixation of electrical devices.

- Home appliance industry: used for the assembly of home appliances.


Feature of Black Hex Bolt

- Blackening: Blackening is a process that forms a thin layer of iron oxide film through chemical or electrochemical methods to increase the corrosion resistance and wear resistance of the bolts.

- Rust resistance: The surface of the blackened hexagonal bolt has a certain rust resistance and can adapt to a relatively humid environment.

- Enhanced hardness: Bolts that have been blackened usually show better surface hardness and wear resistance.

- Appearance: The surface of the blackened bolt is black or dark gray, with a good appearance, suitable for occasions where galvanized or nickel-plated bolts are not desired.

- Low cost: Compared with other surface treatments (such as galvanizing), the cost of blackening is more economical.

- Strong applicability: Suitable for use in dry, mild or neutral environments.


Company Services

Haina is committed to providing customers with high-quality stainless steel standard fasteners and professional services to meet various engineering needs. We have a large amount of spot inventory to ensure fast delivery and save you waiting time. In addition, we provide the following value-added services to help your purchasing experience:

1. Free samples: provide samples for customer testing.

2. 3.1 Test report: quality test report that meets international standards.

3. Video factory inspection: support video factory inspection to demonstrate production process and quality management.


Advantages

- Sufficient inventory: quick response to order requirements.

- Quality assurance: strict quality control to ensure product reliability.

Haina is committed to providing efficient and high-quality fastener services.


FAQ

1.What is the difference between galvanized and HDG?

Galvanized usually refers to electroplating, creating a thin, smooth zinc layer for light corrosion protection. HDG (Hot-Dip Galvanized) involves dipping steel into molten zinc, forming a thick, rough layer for heavy-duty protection. HDG is more durable and suited for harsh environments.


2.Is a galvanized bolt stronger than zinc?

A galvanized bolt is not stronger than a zinc-coated bolt; the difference is in corrosion resistance, not strength.


3.How are blackened hexagonal bolts made?

There are mainly the following manufacturing processes for blackened hexagonal bolts. Low-temperature blackening process, the blackened film of the treated workpiece is firm and has good bonding force. It is dark after oil sealing and has certain wear resistance, which meets the national standard GB/T15519; high-temperature blackening has a very good effect, has good corrosion resistance and wear resistance, and the blackened film has very strong bonding force. The surface of the treated workpiece has wear resistance, friction reduction, anti-scratch, anti-seizure, anti-fatigue, corrosion resistance and self-lubricating properties; the optical matte blackening process is treated by a special method to make the workpiece obtain a matte, non-reflective black oxide film. The blackened film has strong bonding force, firmness, no dust, and good wear resistance


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Manager: Tonyfang
Phone: +86-186 6836 8299
Email: tony@hainafastener.com
Tel: +86-0573-82272371
Fax: +86-0573-82210271
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