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Durable Hex Coupling Nuts | Extension Nuts Suppliers from China | Hebei Chudu Metal Products Factory
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 |
| Retail boxes, plastic bags, or custom-branded packaging available | |
| Lead Time | 7–30 days depending on quantity and customization |
| 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 (FAQ)
What materials are your coupling nuts available in?
Our coupling nuts are manufactured in Carbon Steel, Stainless Steel (SS304, SS316), Alloy Steel, and Brass (available upon request) to suit various environmental and load demands.
Which standards do your coupling nuts comply with?
We supply coupling nuts conforming to international standards including DIN 6334, ASME B18.2.2, and ISO 4032. We can also produce customized sizes and structures based on your requirements.
Can I choose different finishes for corrosion resistance?
Yes, we provide multiple finish options including Zinc Plated (Clear, Yellow, or Blue), Black Oxide, Hot-Dip Galvanized (HDG), and Plain/Polished finishes.
What is your typical delivery lead time and shipping port?
Our lead time ranges from 7 to 30 days depending on the order quantity and customization level. All shipments are dispatched from the Tianjin port in China.
Do you support custom sizes and thread types?
Yes, we offer custom lengths and sizes. Thread types are available in Metric, UNC, UNF, BSW, and BSP. We also support optional left-hand or right-hand thread combinations.
What packaging options do you offer?
We offer bulk packaging in cartons and pallets, as well as retail boxes, plastic bags, and custom-branded packaging tailored to your brand's specifications.