Product Details
Our Dacromet DIN 934 Hex Nuts are engineered for excellence, providing a unique combination of strength, durability, and advanced protection.
- Advanced Dacromet Coating: This is a water-based, inorganic coating composed of zinc and aluminum flakes in a chromate binder. Applied via a dip-spin process and then cured, it forms a multi-layered, sacrificial barrier. This provides exceptional corrosion resistance, often exceeding 500-1000 hours in salt spray tests, without the risk of hydrogen embrittlement.
- No Hydrogen Embrittlement: Unlike electroplating processes, the Dacromet application process is free from acid and electrolysis, which eliminates the risk of hydrogen embrittlement. This makes it the ideal coating for high-strength fasteners (Class 8.8 and above), ensuring they maintain their full mechanical integrity without the danger of brittle failure under load.
- DIN 934 Standard for Universal Compatibility: These nuts are manufactured in strict accordance with the DIN 934 standard, ensuring consistent dimensions and thread tolerances. This guarantees a perfect fit with any standard metric bolt or stud, simplifying assembly and ensuring reliable clamping force.
- Thin-Film Application for Precision Fit: The Dacromet coating is a thin, non-electrolytic film. This means that, unlike thick coatings like hot-dip galvanizing, it does not require the nut threads to be overtapped. This preserves the original thread geometry for a precise, secure fit.
Product Parameters
The technical specifications for our Dacromet Coated DIN 934 Hex Nuts are detailed below.
| Parameter | Specification |
|---|
| Product Name | Dacromet Coated DIN 934 Hex Nut |
| Standard | DIN 934 |
| Material | Carbon Steel |
| Grade / Class | 4.8, 8.8, 10.9, 12.9 |
| Surface Treatment | Dacromet (Preservative Coating) |
| Size Range | M4 – M24 (Wider range available for custom projects) |
| Brand Name | Duojia |
| Place of Origin | Hebei, China |
| Measurement System | Metric |
| Application | Automotive, Wind Energy, Heavy Industry, Construction |
Product Features
Our Dacromet DIN 934 Hex Nuts are the superior choice for projects demanding high performance and longevity.
- Superior Corrosion Resistance: Provides exceptional protection against rust and corrosion, making it ideal for outdoor, industrial, and high-humidity environments.
- Eliminates Hydrogen Embrittlement Risk: The coating process is safe for high-strength steel, preventing the potential for catastrophic fastener failure under stress.
- Excellent Heat Resistance: Dacromet coatings can withstand high temperatures without compromising their protective properties, making them suitable for automotive engine and exhaust applications.
- Thin, Uniform Coating: Ensures a precise fit with standard threaded bolts without the need for overtapping, maintaining the integrity of the threaded connection.
- Environmentally Compliant: Modern Dacromet formulations are chromium-free and water-based, offering a more environmentally friendly alternative to older coating technologies.
Product Applications
The unique properties of Dacromet make these hex nuts indispensable for a variety of high-performance applications.
- Automotive Industry: Widely used for chassis, brake systems, engine components, and other fasteners where high strength and resistance to heat, salt, and chemicals are critical.
- Wind Energy Sector: Ideal for fastening bolts on wind turbines, where long-term corrosion resistance and reliability in harsh weather are paramount.
- Construction and Infrastructure: Used in structural steel connections, bridges, and other projects requiring high-strength, corrosion-resistant fasteners.
- Heavy Machinery and Equipment: Provides durable and reliable fastening for agricultural, construction, and industrial equipment that is exposed to the elements.
- Marine and Offshore Applications: Offers a high-performance alternative for components in marine environments that require both strength and excellent resistance to saltwater spray.
