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The Stainless Steel Long Nuts, compliant with DIN6334 standards, are elongated hexagonal coupling fasteners engineered for connecting threaded rods in corrosion-prone environments, offering superior durability and structural integrity. Available in SS201 for cost-effective basic resistance in dry settings, SS304 for versatile all-around protection in general industry, and SS316 for exceptional resistance to saltwater and chemicals in marine or harsh chemical applications, these nuts feature a plain finish that preserves the material’s natural oxide layer for long-term performance without additional coatings. Their hollow, cylindrical design with internal threads at both ends allows seamless extension of assemblies, distributing loads evenly to prevent failures under stress. Ideal for marine engineering, chemical equipment, industrial machinery, and architectural metalwork, these coupling hex long nuts ensure high-strength, rust-free connections. Manufactured by Duojia in Hebei, China, they meet ISO9001, ISO14001, and ISO45001 certifications, emphasizing quality and eco-friendliness. With metric sizes from M4 to M24 and grades up to A4-80, they provide reliable solutions for heavy and general industries, supporting bulk orders with 10,000 pieces monthly capacity and global exports. These stainless steel DIN6334 long nuts deliver maintenance-minimal, hygienic fastening that excels in demanding conditions, optimizing assembly efficiency and longevity for professionals seeking robust thread extensions.
These DIN6334 coupling hex long nuts are designed as extended hexagonal cylinders with dual-end internal threading, facilitating the joining of threaded rods for adjustable, high-tensile connections in extended assemblies. The SS201 variant offers economical corrosion resistance for indoor uses, SS304 provides balanced protection against oxidation in varied climates, and SS316 incorporates molybdenum for enhanced resistance to pitting in aggressive environments like offshore platforms or acid-exposed machinery. The plain surface ensures non-reactivity and easy cleaning, making them suitable for sanitary or visible installations without compromising strength. Thread pitches range from 1mm to 4mm, compatible with standard rods, and Duojia’s precise manufacturing includes cold pressing for uniformity, certified by SGS for consistency. Installation involves threading onto rods and tightening with a hex wrench, ensuring even torque to avoid deformation—regular wiping keeps the oxide layer intact, especially for SS304/316 in humid areas. These nuts support applications in marine structural links, chemical piping, and machinery frames, with minimum orders of 100 pieces and 14-30 day delivery in protective packaging. Exported worldwide, they offer a hygienic, non-corrosive alternative to coated nuts, enhancing reliability in food processing or coastal engineering projects.
| Parameter | Details |
|---|---|
| Product Name | Stainless Steel Long Nut – DIN6334 Coupling Hex Long Nuts (SS201/304/316) |
| Material | Stainless Steel (SS201, SS304, SS316) |
| Grade | 4.8, 8.8, 10.9, 12.9, A2-70, A4-70, A4-80, etc. |
| Surface Treatment | Plain |
| Size Range | M4-M24 (Metric) |
| 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 Stainless Steel DIN6334 Coupling Hex Long Nuts distinguish themselves with a hexagonal profile for effortless wrench access, combined with an extended body that enables precise rod extensions without weakening joints. The SS201 provides affordable resilience, SS304 offers comprehensive corrosion defense with good weldability, and SS316 delivers molybdenum-enhanced protection against chloride attacks, ensuring versatility across environments. Their plain finish promotes natural passivation, resisting tarnish and contamination while allowing easy sanitation in sensitive applications. Internal threading ensures smooth, secure rod engagement, supporting high loads without slippage, and the design minimizes stress concentrations for fatigue resistance. Duojia’s customizable lengths and grades cater to specific needs, all validated through tensile and corrosion tests for reliability. These nuts withstand extreme conditions, from subzero temperatures to acidic exposures, without embrittlement, and require only basic cleaning for upkeep. Lightweight construction reduces overall weight in assemblies, while the material’s non-magnetic properties suit electronics or medical uses. Environmentally sound production aligns with ISO guidelines, cutting emissions. This integration of features yields a durable, adaptable fastener that prioritizes strength, hygiene, and ease, ideal for scenarios demanding corrosion-proof, adjustable connections with enduring performance.
Stainless Steel DIN6334 Coupling Hex Long Nuts are versatile for extending threaded assemblies in corrosion-sensitive and high-stress scenarios across industries. In marine engineering, SS316 variants connect structural components on ships or offshore platforms, resisting saltwater erosion for safe, long-lasting links. Chemical equipment benefits from their use in piping and reactor frames, where SS304/316 prevent contamination and withstand acidic exposures. Industrial machinery employs them for adjustable rod systems in conveyors or presses, enabling easy length modifications without compromising stability. Architectural metalwork utilizes these nuts for aesthetic, rust-free joins in buildings or bridges, supporting load-bearing extensions. In automotive and aerospace, SS201 options provide budget-friendly connections in non-critical areas, while higher grades ensure reliability in chassis or engine mounts. Duojia’s globally distributed products accommodate custom applications in food processing for hygienic, non-reactive fastening. With simple wrench tightening and minimal maintenance like wiping, they streamline installations, reducing downtime and enhancing safety in both heavy-duty operations and general projects, from scaffolding to equipment retrofits, worldwide.
