Stainless Steel DIN929 Hexagon Weld Nuts
As a core component in structural and industrial applications, DIN929 Hexagon Weld Nuts offer unmatched performance and secure attachment. These nuts, conforming to the DIN929 standard, are specifically designed to be welded onto metal surfaces, providing a permanent, vibration-resistant threading solution. Stainless steel construction ensures exceptional corrosion resistance and mechanical strength, making them ideal for heavy-duty use in extreme environments.
At Flybear Fastener, our high-quality weld nuts are manufactured with precision and strict adherence to international quality standards, ensuring reliable performance in a wide range of industries.
Product Introduction: What Are DIN929 Hexagon Weld Nuts?
DIN929 Hexagon Weld Nuts are six-sided nuts with three precision projections or bosses on the bottom face. These projections are designed for spot welding to sheet metal or other steel components. The weld projections ensure a strong, uniform weld that integrates the nut into the substrate, offering superior load-bearing capacity and stability even under high-stress scenarios.
Manufactured using premium-grade stainless steel, DIN929 Hexagon Weld Nuts provide excellent corrosion resistance and long-term usability in both indoor and outdoor settings, making them widely utilized across automotive, construction, and heavy machinery industries.
Product Specification Table
| Specification | Details |
|---|---|
| Product Name | DIN929 Hexagon Weld Nuts |
| Standard | DIN 929 |
| Material | Stainless Steel (A2, A4 options) |
| Dimensions Available | M3 – M160 |
| Surface Finish | Plain / Passivated |
| Weld Type | Spot weld with three projections |
| Shape | Hexagon |
Technical Data Sheet
| Property | Value |
|---|---|
| Hardness | Up to 250 HB |
| Tensile Strength | ≥ 700 MPa |
| Corrosion Resistance | High (especially in A4 Stainless) |
| Heat Resistance | Up to 870°C for A4-80 Grade |
| Thread Tolerance | ISO 6H |
| Weldability | Excellent |
| Conformance | DIN 929 / ISO 21670 Equivalent |
Material and Manufacturing Process
DIN929 Hexagon Weld Nuts are predominantly made from high-grade stainless steel, including A2 (304) and A4 (316) varieties. The choice of stainless steel ensures superior resistance to rust, chemicals, and environmental elements.
The manufacturing process includes:
- Precision Cold Forging for shape formation.
- Machining for thread accuracy.
- Spot welding boss projection shaping.
- Thread rolling for enhanced strength.
- Optional surface treatments for added protection (e.g., passivation for stainless steel).
All our production is ISO9001 certified, ensuring consistency, reliability, and compliance with international standards.
Typical Industries and Use Cases
DIN929 Weld Nuts are vital in applications requiring concealed, load-bearing threads on metallic parts. Their primary industries include:
- Automotive body and chassis assembly
- Aerospace tooling and frames
- Construction (steel structures, bridges, infrastructure)
- Industrial machinery and weldments
- Marine fabrication and offshore installations
These nuts are particularly suitable for applications where accessibility is limited, and rear access to hold regular nuts is not feasible.
Product Advantages & Competitive Edge
Stainless Steel DIN929 Weld Nuts Benefits
- Precision Engineering: Manufactured with tight dimensional tolerances and consistent threading.
- Material Quality: Made with premium stainless steel for maximum corrosion and wear resistance.
- Advanced Surface Treatment: Optionally passivated or polished for enhanced longevity.
- Ease of Welding: Designed for fast, efficient spot welding with secure hold.
- Strong Customization Capabilities: Available for mass customization per technical drawings or customer specs.
- Always in Stock: Full range of sizes and grades ready for immediate shipment.
- Reliable Technical Support: Experienced engineering team ready to provide drawings, weld specs, and load data.
Quality Assurance and Inspection
At Flybear Fastener, quality is integral to our brand. Each batch undergoes rigorous inspections, including:
- Dimensional Tests (Thread Tolerance, Height, Flatness)
- Material Analysis (Spectro–Chemical & Mechanical Tests)
- Salt Spray Corrosion Tests (when required)
- Welding Capability Validation
- Batch Serialization and Traceability Reports
Our goal is to provide customers with 100% defect-free products that meet their designated mechanical and environmental conditions.
Choosing the Right Weld Nut: A Purchasing Guide
When selecting DIN929 Hexagon Weld Nuts, consider the following:
- Material Grade: Choose A2 for general corrosion resistance; A4 for marine or chemical exposure.
- Size & Thread Pitch: Ensure compatibility with matching bolts.
- Application Method: Confirm if the part allows spot welding projections.
- Load Requirements: Tensile and shear load must match the nut’s specifications.
- Certifications: Ensure the supplier provides testing certificates and compliance documents.
Always work with experienced suppliers like Flybear Fastener that understand your industry standards and can assist with engineering specifications.
Conclusion and Company Promotion
DIN929 Hexagon Weld Nuts deliver exceptional fastening performance for permanent thread solutions in industrial structures. Designed for precise spot welding, these nuts offer high strength, superior corrosion resistance, and compatibility with numerous material thicknesses.
At Flybear Fastener, we always adhere to the principle of “Quality First, Customer Foremost,” dedicated to providing our clients with supreme quality fastener products and a comprehensive one-stop solution for all fastening requirements.
We invite you to explore our complete product range and contact us today to receive a customized quote or discuss your industry-specific needs.








