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Durable Coupling Nuts from China | Hex Coupling Nuts & Extension Nuts Suppliers | Reliable Factory Products
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
Applications
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
We supply coupling nuts in Carbon Steel, Stainless Steel (SS304, SS316), Alloy Steel, and Brass (available on request) to meet various environmental and strength requirements.
Our coupling nuts are manufactured in compliance with major international standards, including DIN 6334, ASME B18.2.2, and ISO 4032. We also support fully customized dimensions.
Yes, we offer metric sizes ranging from M5 to M48 and inch sizes from 1/4" to 2". Thread configurations include Metric, UNC, UNF, BSW, and BSP. Custom lengths and sizes can also be engineered.
We offer multiple finish options, including Zinc Plated (Clear, Yellow, or Blue), Black Oxide, Hot-Dip Galvanized (HDG), and Plain/Polished finishes for enhanced corrosion resistance.
Our standard lead time ranges from 7 to 30 days, depending on the order size and customization requirements. All orders are processed and shipped through Tianjin Port, China.