Products Description
Carriage Bolt
Hebei Sanwei Fasteners Co., Ltd.
Structural characteristics
The head is semi-circular or circular in shape, with a smooth surface that is aesthetically pleasing and can reduce damage from external collisions. It is commonly used in exposed connections.
Material
Common materials include carbon steel, stainless steel, and aluminum alloy. Carbon steel material has a lower cost and is suitable for general environments; Stainless steel has excellent corrosion resistance and is commonly used in harsh environments such as humidity, acidity, and alkalinity; Aluminum alloy is lightweight and aesthetically pleasing, commonly used in the fields of furniture or decoration.
Surface Treatment
To improve anti-corrosion performance and aesthetics, carriage bolts are often treated with galvanizing (white zinc, color zinc), nickel plating, blackening, etc. For example, galvanizing treatment can form an oxide film on the metal surface, effectively delaying corrosion.
Products Parameter
| Name | Carriage Bolt |
| Material | carbon steel,Stainless Steel and alloy steel,etc. |
| Grade | Grade 4.8, Grade 5.6, Grade 8.8 , Grade 10.9,Grade 12.9 |
| Nominal diameter | M4-M36 |
| Surface treatment | PLAIN BLACK ZINC |
Product application
Ships and Vehicles
The connection of ship decks, car interiors or body components needs to balance vibration resistance and corrosion resistance, and stainless steel carriage bolts are widely used.
Machinery manufacturing
Used for fixing components such as brackets and shields, especially suitable for situations that require frequent disassembly or aesthetic requirements.
Wooden structure
Widely used for connecting wooden structures, such as carriage carriages, wooden walkways, outdoor furniture, etc. The square neck design can prevent bolts from rotating in the wood, ensuring a firm connection.
Architecture and Decoration
In building components such as steel structures, aluminum alloy doors and windows, railings, etc., the round head design can be hidden on the surface, combining functionality and aesthetics; Furniture assembly is also commonly used in interior decoration
Prodection Details
Structure Design
Head
Usually designed as a semi-circular or smooth dome without cross grooves or hexagonal support tools, it not only avoids hooking or damaging surrounding objects, but also has a certain anti-theft effect.
Square Neck
Located below the bolt head, it is generally square shaped. During installation, the square neck can be embedded into holes in wood or metal, effectively preventing bolt rotation during tightening and ensuring the stability of the connection.
Threaded Rod Section
Adopting full or partial thread design, suitable for different fastening requirements. The specification and accuracy of the thread will affect the tightening performance of the bolt and the degree of fit with the nu
Selection and usage precautions
Select level based on load
Light load or non structural connection: class 4.8 or 5.6.
Medium to high intensity loads: Priority should be given to selecting 8.8 grade or above.
Corrosion environment: Stainless steel materials are preferred.
Matching nuts and washers
The bolt grade should match the nut grade to avoid failure due to strength mismatch.
Vibration or high load scenarios: Paired with spring washers or anti loosening nuts to prevent loosening.
Certificates
Factory Environment
Exhibition
FAQ
Q: In general, how long can delivery be made after receiving an order?
A: Regular orders can be completed and shipped within 15-20 working days after receiving the deposit and confirming product details.
Q: What is the packaging method of the product?
A: 50KG bag and pallet
Q: During the product usage process, if we encounter technical problems, can you provide technical support?
A: Sure. We have a professional technical team that can provide you with technical consultation and guidance through methods such as telephone, email, or video conference.
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