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Long Blackened Carbon Steel Flat Head Coach Bolt

Material: carbon steel 12.9Grade 
Standard:DIN603
Size: M5-M24
Min Order: 50pcs   
Sample: Free sample
Delivery time:3-30 Days
Availability:
Quantity:
Long Blackened Carbon Steel Flat Head Coach Bolt
Long Blackened Carbon Steel Flat Head Coach Bolt
Long Blackened Carbon Steel Flat Head Coach Bolt
Long Blackened Carbon Steel Flat Head Coach Bolt
Long Blackened Carbon Steel Flat Head Coach Bolt
  • DIN603

  • HINA

  • HINA2024112206


Long Blackened Carbon Steel Flat pHead Coach Bolt

Product Description

Long blackened carbon steel coach bolt is a long coach bolt made of carbon steel as the base material and treated with blackening. Its length advantage enables it to pass through thicker materials for fastening, and is suitable for connecting thick plates, large brackets and other structures. The carbon steel material ensures that it has good strength and toughness, and can withstand large tensile and shear forces. The blackened surface not only has certain rust and wear resistance, but also presents a black appearance, which can add a simple style to some occasions where appearance is required.

Product Details

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Production Process

product process S

Application of Black Coach Bolt

The long length range is wide, which may range from tens of millimeters to hundreds of millimeters, depending on the actual application. In the field of construction, when used to fix solar panel brackets to roof structures, if the roof structure is thick or bolts need to penetrate multiple layers of materials for fixing, long bolts can play a role. In large-scale machinery manufacturing, such as fixing the frame of heavy equipment, its longer size can ensure the stability of the connection, and can pass through thicker metal parts to connect the parts tightly together.

Feature of Black Coach Bolt

Compared with aluminum alloy bolts, long blackened carbon steel coach bolts are stronger and more suitable for occasions with larger loads. Compared with galvanized bolts, black treatment has slightly weaker anti-rust ability, but in some environments where anti-rust requirements are not particularly high, long black carbon steel coach bolts are less expensive. And in some buildings or equipment of a specific style, the black appearance may be more in line with the overall design style.

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.

certification

FAQ

1.How long can the black oxide film on the bolt surface last after blackening?

The maintenance time of the black oxide film is greatly affected by environmental factors. In a dry and clean indoor environment, it may last for several years; but if it is in a humid and corrosive gas environment (such as the seaside, chemical workshop, etc.), the oxide film may peel off and rust in a few months. The service life of the oxide film can be extended by proper maintenance, such as applying anti-rust oil and wax sealing.


2.What are the specific applications of blackened carbon steel carriage bolts in outdoor wooden structures?

In outdoor wooden structures, it can be used to connect structural components such as wooden beams and wooden roof trusses. For example, in the construction of the roof structure of a wooden house, blackened carbon steel carriage bolts are used to connect the rafters and the roof trusses. The square neck embedded in the wood can prevent the bolts from turning, and the black appearance is more in line with the natural style of wooden structures. However, since the outdoor environment may be harsh, it is necessary to consider its anti-rust measures, such as regular inspection and maintenance, and timely treatment of rusted parts.


3.In machinery manufacturing, what are the advantages of blackened carbon steel carriage bolts over other bolts?

In machinery manufacturing, its cost is relatively low, and it is a good choice for some non-critical parts that do not require particularly high appearance and are not extremely strict in load requirements. For example, in the fixing of the outer shell of some agricultural machinery or the connection of internal non-critical brackets, blackened carbon steel carriage bolts can provide sufficient tightening force, and the black appearance can also cover up slight oil and dust to a certain extent, and its blackened surface has a certain wear resistance, which can resist slight friction during the operation of the machine.


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Manager: Tonyfang
Phone: +86-186 6836 8299
Email: tony@hainafastener.com
Tel: +86-0573-82272371
Fax: +86-0573-82210271
Add: 1-405 No.1888 Canaan Plaza Zuili Road, Nanhu District Jiaxing City Zhejiang Province 314050
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