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The Galvanized White Blue Zinc Plated DIN6334 Hex Coupling Long Nuts are extended hexagonal fasteners designed for linking threaded rods in demanding structural applications, providing secure extensions with enhanced corrosion protection. These coupling nuts feature a uniform zinc electroplating in white for a bright, smooth finish suitable for aesthetic or indoor uses, or blue for added passivation in moderately humid environments, forming a reliable barrier against rust and oxidation. Primarily constructed from carbon steel in grades 4.8 to 12.9, with stainless steel alternatives for harsh conditions, they adhere to DIN6334 standards and offer metric sizes from M4 to M24. Their elongated, hollow design ensures even torque distribution, preventing thread stripping and enabling adjustable assemblies without weakening joints. Ideal for heavy industry such as construction scaffolding, automotive chassis extensions, and machinery linkages, these long nuts deliver high-strength, vibration-resistant connections. Manufactured by Duojia in Hebei, China, they comply with ISO9001, ISO14001, and ISO45001 for quality and sustainability. With a production rate of 10,000 pieces monthly, bulk packaging options, and worldwide exports, these galvanized hex coupling nuts provide economical, durable solutions for professionals requiring robust thread elongation in outdoor or industrial settings, optimizing load-bearing capacity and assembly versatility.
Engineered as cylindrical hex nuts with dual internal threads, the Galvanized White Blue Zinc Plated DIN6334 Hex Coupling Long Nuts facilitate seamless rod connections, extending assemblies while maintaining structural stability. The galvanization process applies a thin zinc layer, with white offering a polished appearance for visible installations and blue enhancing resistance to environmental factors like moisture. Available in carbon steel for standard strength or stainless steel for corrosion-heavy uses, they support thread pitches from 1mm to 4mm, ensuring compatibility with various rods. Duojia’s precise cold pressing and plating techniques guarantee even coverage and mechanical integrity, certified by SGS for consistency. Installation involves threading onto rods and securing with a hex wrench, applying balanced force to avoid damage—regular checks of the zinc coating are advised, repairing scratches with anti-rust agents to prolong protection. These nuts excel in automotive rod linkages, construction frameworks, and equipment joints, where their length accommodates custom extensions. With sizes M6 to M36 and weights from 7kg to 1470kg per 1000 units, they offer minimum orders of 100 pieces and 14-30 day delivery in cartons or pallets. Exported globally, they provide a versatile, protective fastening option for extending threads in heavy-duty and general applications.
| Parameter | Details |
|---|---|
| Product Name | Galvanized White Blue Zinc Plated DIN6334 Hex Coupling Long Nut |
| Material | Carbon Steel; Stainless Steel options |
| Grade | 4.8, 8.8, 10.9, 12.9, A2-70, A4-70, A4-80, etc. |
| Surface Treatment | White Zinc Plated, Blue Zinc Plated (Galvanized) |
| Size Range | M4-M24 (Extended to M6-M36 in variants) |
| Thread Pitch (P) | 1-4 mm |
| Width Across Flats (s) | 10mm-55mm (size-dependent) |
| Length (L) | 18mm-108mm |
| Across Corners (e min) | 11.05mm-60.79mm |
| Standards | DIN6334, ISO9001, ISO14001, ISO45001, SGS |
| Weight per 1000 Units (≈kg) | 7-1470 (varies by size) |
| Packaging | Small Pack + Carton + Pallet or Bag/Box with Pallet |
| Minimum Order | 100 Pieces |
| Supply Ability | 10,000 Pieces per Month; 500 Tons per Month |
| Delivery Time | 14-30 Days depending on quantity |
These Galvanized White Blue Zinc Plated DIN6334 Hex Coupling Long Nuts feature an innovative extended hex design that enables precise rod coupling, distributing forces uniformly to enhance joint stability without compromising thread integrity. The zinc plating provides a corrosion-resistant shield, with white ensuring a glossy, non-abrasive surface for smooth handling and blue offering reinforced protection against humidity and salts. Built from carbon steel or stainless steel, they deliver exceptional tensile strength across grades, resisting deformation in high-load scenarios. Their dual-threaded interior accommodates easy adjustments, supporting both coarse and fine pitches for customized fits. Duojia’s engineering allows for tailored lengths, all subjected to adhesion and hardness tests for endurance. These nuts withstand environmental stresses, maintaining performance in wet or industrial atmospheres, and require only basic inspections for upkeep. Compact yet elongated, they reduce material use while maximizing extension capabilities, ideal for space-constrained assemblies. Sustainable manufacturing meets ISO criteria, minimizing environmental footprint. This set of characteristics ensures reliable, rust-proof connections, ease of installation, and longevity, making them a prime selection for applications needing adjustable, high-durability fastening with effective corrosion defense.
Galvanized White Blue Zinc Plated DIN6334 Hex Coupling Long Nuts are highly effective for extending threaded rods in robust, corrosion-exposed assemblies across sectors. In construction, they join scaffolding and structural elements, where blue zinc resists weather for outdoor stability. Automotive uses include chassis and suspension linkages, enabling adjustable extensions with white zinc providing a clean finish in visible areas. Heavy industry applications encompass machinery joints and pipeline connections, leveraging their strength to handle vibrations without loosening. General engineering benefits from their role in equipment frames, allowing easy modifications in manufacturing setups. In outdoor or humid environments, the galvanization ensures rust-free performance for signage or fencing. Duojia’s products, distributed worldwide, support specialized needs in agricultural machinery or renewable energy structures, with simple wrench tightening facilitating quick installations. Their design minimizes failures, enhancing safety and reducing maintenance in both professional and field operations, from industrial retrofits to custom builds, ensuring efficient, durable connections globally.
