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The Wholesale DIN 6923 Flange Nut with black zinc or oxide coating is a high-strength fastener designed for secure, vibration-resistant connections in demanding applications. These hexagonal nuts feature an integrated flange that expands the contact surface, distributing load evenly and eliminating the need for separate washers, which simplifies assembly and reduces costs. Crafted from carbon steel in grades 4.8 to 12.9, with stainless steel options like A2-70 and A4-80 for corrosive environments, the black zinc plating provides a lubricious, rust-protective layer ideal for soldering and basic protection, while black oxide offers enhanced wear resistance and a sleek, non-reflective finish. Available in metric sizes M4 to M24 with coarse or fine threads, these nuts adhere to DIN 6923 standards and are supplied by Duojia in Hebei, China, with ISO9001, ISO14001, and ISO45001 certifications ensuring quality. Serrated flange variants boost anti-loosening performance in high-vibration settings, making them suitable for machinery, automotive, and construction uses. With bulk wholesale options, minimum orders of 100 pieces, and a monthly capacity of 10,000 pieces, these coated flange nuts deliver reliable performance, backed by global exports and competitive pricing for manufacturers and suppliers seeking durable, efficient fastening solutions.
These DIN 6923 Flange Nuts are engineered with a hexagonal body and a wide flange base, available with or without serrations for added grip on surfaces. The black zinc plating involves electro-galvanization to form a thin, protective zinc layer that resists corrosion and improves conductivity, while the black oxide treatment creates a chemical film for superior abrasion resistance and aesthetic appeal in industrial settings. Produced from durable carbon steel or stainless steel, they support thread pitches from 0.8mm to 2.5mm across sizes M5 to M20, ensuring compatibility with standard bolts. Duojia’s manufacturing includes hardness testing and coating thickness checks for consistency, with SGS certification verifying quality. Installation requires matching the nut to the bolt size and grade, then tightening with a wrench to align the flange against the workpiece—serrated types enhance security in vibrating conditions but may require caution on soft materials to avoid scratches. Maintenance involves periodic coating inspections, with repairs using zinc-rich paint for zinc-plated versions or anti-rust agents for oxide finishes. Packaged in small packs, cartons, or pallets, these nuts offer 14-30 day delivery and are exported to markets in Europe, Asia, and the Americas, providing wholesalers with a versatile, high-volume supply for heavy and general industry needs.
| Parameter | Details |
|---|---|
| Product Name | Wholesale DIN 6923 Flange Nut – Black Zinc/Oxide Coated |
| Material | Carbon Steel; Stainless Steel (A2-70, A4-70, A4-80) options |
| Grade | 4.8, 8.8, 10.9, 12.9, etc. |
| Surface Treatment | Black Zinc Plated, Black Oxide |
| Size Range | M4-M24 (Metric, coarse and fine threads) |
| Thread Pitch | Coarse: 0.8-2.5 mm; Fine: 1-1.5 mm (varies by size) |
| Flange Diameter (dc max) | 11.8-42.8 mm (size-dependent) |
| Height (m max) | 5-20 mm |
| Standards | DIN 6923, ISO9001, ISO14001, ISO45001, SGS |
| Anti-Loosening | Serrated flange option for vibration resistance |
| 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 based on quantity |
Featuring a built-in flange for load distribution, the DIN 6923 Flange Nuts with black zinc or oxide coatings provide exceptional stability and protection against surface damage, making them ideal for assemblies where washers would otherwise be required. The black zinc finish offers a smooth, corrosion-resistant surface with good lubricity for easier installation and electrical conductivity, while black oxide delivers a tough, matte layer that withstands wear and reduces glare in visible applications. Constructed from carbon steel in various grades for high tensile strength, or stainless steel for rust-prone areas, these nuts include optional serrations on the flange to enhance grip and prevent loosening under vibrations. Precise metric threading ensures secure fits, and Duojia’s customizable options allow for tailored designs, including non-serrated variants for delicate surfaces. Their design minimizes pressure concentration, extending workpiece lifespan, and the coatings maintain integrity without frequent reapplications. Lightweight yet robust, these nuts support heavy loads in compact spaces, with eco-friendly production processes ensuring sustainability. This blend of features makes them a practical choice for wholesalers needing reliable, low-maintenance fasteners that perform consistently in challenging conditions.
These Wholesale DIN 6923 Flange Nuts are widely applied in industries requiring robust, anti-loosening fastening with integrated load distribution. In automotive sectors, they secure chassis, suspension, and engine components, where serrated flanges resist vibrations from road use and black oxide coatings handle oily environments. Machinery manufacturing uses them for assembling vibration-prone parts like motors and conveyors, benefiting from the flange’s pressure-spreading design to protect metal surfaces. Construction applications include structural connections in buildings and bridges, with black zinc plating providing corrosion resistance in outdoor exposures. In electronics and appliance production, non-serrated versions fasten panels without scratching, while the oxide finish suits high-wear assemblies. Agricultural equipment relies on them for implements and vehicles, ensuring durability under field stresses. Duojia’s products, distributed globally to countries like Russia and Australia, facilitate easy installations and maintenance, with coating repairs extending service life. This versatility supports both heavy-duty industrial tasks and general wholesale needs, enhancing safety and reducing assembly time across diverse projects.
