NINGBO YONGBIAO FASTENER CO.,LTD
| Payment Terms | T/T |
| Supply Ability | 500tons/Month |
| Delivery Time | 7-25days |
| Packaging Details | carton box |
| Place Of Origin | ZHEJIANG CHINA |
| Application | Wood, Metal, Plastic |
| Finish | Zinc Plated |
| Thread Coverage | Full Thread |
| Head Type | Hexagon Head |
| Thickness | 4 - 20 mm |
| Thread Diameter | 3mm-12mm |
| Connection | Common Bolt |
| Standard | DIN,GB,ISO,JIS,BS |
| Brand Name | YB |
| Model Number | GB818-85 |
| Certification | ISO9001 |
| Place of Origin | ZHEJAING CHINA |
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Product Specification
| Payment Terms | T/T | Supply Ability | 500tons/Month |
| Delivery Time | 7-25days | Packaging Details | carton box |
| Place Of Origin | ZHEJIANG CHINA | Application | Wood, Metal, Plastic |
| Finish | Zinc Plated | Thread Coverage | Full Thread |
| Head Type | Hexagon Head | Thickness | 4 - 20 mm |
| Thread Diameter | 3mm-12mm | Connection | Common Bolt |
| Standard | DIN,GB,ISO,JIS,BS | Brand Name | YB |
| Model Number | GB818-85 | Certification | ISO9001 |
| Place of Origin | ZHEJAING CHINA |
High Strength Hex Bolt With Lock And Plain Washer Assemblies
1.Products Details:
This assembly is a pre-configured fastening solution combining three components:
1. Cross Recessed Hexagon Head Bolt: Features a hexagonal shank for wrench tightening and a cross-shaped recess (Phillips drive) for screwdriver compatibility, offering dual-tool accessibility.
2. Spring Washer: A helical washer that provides tension and vibration resistance, preventing loosening under dynamic loads.
3. Flat Washer: A thin circular washer placed between the bolt head and the surface, distributing pressure evenly and protecting the material from damage.
2.Key Features:
- Saves time by eliminating separate component handling during installation.
- Spring washer reduces loosening in high-vibration environments (e.g., automotive, industrial machinery).
- Flat washer prevents bolt head indentation on soft materials (e.g., wood, aluminum).
- Hex head + cross recess allow flexibility in installation tools.
3.Technical Parameters of Hex Bolt with lock and plain washer
| d | M4 | M5 | M6 | M8 | |
| a | MAX | 1.4 | 1.6 | 2 | 2.5 |
| b | MIN | 38 | 38 | 38 | 38 |
| h | 0.8 | 1 | 1.6 | 1.6 | |
| H | 2.75 | 3.25 | 4 | 5 | |
| dc | 9 | 10 | 12 | 16 | |
| d2 | 6.78 | 8.75 | 10.71 | 13.64 | |
4.Certificate Display
5.Production Process
6.Packaging and shipping Details
Company Details
Business Type:
Manufacturer,Exporter,Trading Company
Year Established:
2012
Total Annual:
5000000-6000000
Employee Number:
45~53
Ecer Certification：
Verified Supplier
Ningbo Yongbiao Fastener Manufacturing Co., Ltd. is located in Ningbo, the second largest port city in China. The factory is 50 kilometers away from Ningbo Port and can reach the sea freight warehouse in one hour, with very fast logistics. The company was founded in 2012 and after years of hard work... Ningbo Yongbiao Fastener Manufacturing Co., Ltd. is located in Ningbo, the second largest port city in China. The factory is 50 kilometers away from Ningbo Port and can reach the sea freight warehouse in one hour, with very fast logistics. The company was founded in 2012 and after years of hard work...
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