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China Suppliers - Durable Hex Coupling Nuts & Extension Nuts Factory for Structural and Mechanical Applications
Product Overview
| Product Name | Coupling Nut / Hex Coupling Nut / Rod Coupler / Extension Nut |
| Standards | DIN 6334, ASME B18.2.2, ISO 4032, or customized |
| Material | Carbon Steel, Stainless Steel (SS304, SS316), Alloy Steel, Brass (available on request) |
| Grade | 4, 6, 8, 10, 12 / A2-70, A4-80 |
| Thread Type | Metric / UNC / UNF / BSW / BSP |
| Finish Options | Zinc Plated (Clear / Yellow / Blue), Black Oxide, Hot-Dip Galvanized (HDG), Plain / Polished |
| Size Range | Metric: M5 – M48, Inch: 1/4" – 2", Custom lengths and sizes available |
Product Features
Hexagonal shape for easy installation using a standard wrench
Used to join threaded rods and extend their length
Available in long or short types to suit different load requirements
Ideal for tensioning systems and structural support
Manufactured with high precision for strong and reliable thread engagement
Optional left-hand or right-hand thread combinations available
Applications
Construction and steel structure connections
HVAC and plumbing installations
Tensioning rods in bridges and towers
Equipment assembly and maintenance
Electrical supports and mounting systems
Solar panel structures and renewable energy systems
Packaging & Delivery
| Packaging | Bulk in cartons and pallets, or retail boxes, plastic bags, and custom-branded packaging options. |
| Lead Time | 7–30 days depending on quantity and customization requirements. |
| Shipping Port | Tianjin, China |
Why Choose Hebei Chudu
- Over a decade of expertise in fastener production and global export.
- ISO 9001 certified with complete quality inspection process.
- Custom sizes, materials, and threads available for special applications.
- Competitive pricing, short lead time, and stable supply.
- Support for OEM/ODM orders and professional export service.
- Extensive product range for industrial, commercial, and structural fastening.
Frequently Asked Questions
What materials are available for your coupling nuts?
We manufacture coupling nuts using Carbon Steel, Stainless Steel (SS304, SS316), Alloy Steel, and Brass (available upon request) to suit various environmental and load demands.
Can I get customized sizes and threads for special projects?
Yes. We support custom lengths, sizes, and thread configurations (including Metric, UNC, UNF, BSW, BSP, and left-hand or right-hand combinations) to match your specific application requirements.
What are the standard packaging options you offer?
Our standard packaging is bulk in cartons and pallets. We also offer customized options such as retail boxes, plastic bags, or custom-branded packaging.
What is the typical lead time and shipping port for orders?
The lead time ranges between 7 to 30 days, depending on order size and customization. All orders are primarily shipped from Tianjin Port, China.
How does Hebei Chudu ensure product quality?
We are an ISO 9001 certified manufacturer with a complete quality inspection process. With over a decade of fastener production experience, we guarantee precise thread engagement and stable mechanical performance.