Carbon Steel Dual Slotted Self-locking Hex Nuts NF E 25-411
Product Overview
Dual Slotted Self-locking Hex Nuts is a high-performance mechanical fastener designed for enhanced security and vibration resistance. Manufactured in accordance with the NF E 25-411 standard, this type of nut features a dual slot design that allows for a self-locking mechanism, preventing unintentional loosening in dynamic applications. Commonly made from durable carbon steel, these hex nuts are suitable for environments where strength and reliability are paramount. Their self-locking capabilities make them especially useful in high-stress mechanical assemblies, ranging from automotive to heavy machinery.
Product Specifications
| Attribute | Specification |
|---|---|
| Product Name | Dual Slotted Self-locking Hex Nuts |
| Standard Compliance | NF E 25-411 |
| Material | Carbon Steel |
| Finish/Coating | Dacromet / Zinc-Plated / Black Oxide |
| Thread Type | Metric and Inch Available |
| Locking Mechanism Type | Dual Slot Self-locking |
| Available Sizes | M6 – M48, Custom Sizes on Request |
| Application Environment | High Vibration, High Load |
Technical Parameters
| Parameter | Range / Value |
|---|---|
| Thread Tolerance | 6H / ISO 965 |
| Tensile Strength (min) | 800 MPa |
| Hardness | HRC 25-35 |
| Temperature Resistance | -50°C to 300°C |
| Corrosion Resistance | Depends on Coating (Zinc/Black Oxide) |
| Fatigue Resistance | High |
Material and Manufacturing Process
The Dual Slotted Self-locking Hex Nuts are manufactured from high-quality carbon steel sourced from certified suppliers. Carbon steel is chosen for its strength-to-weight ratio and affordability. The production process includes:
- Raw material inspection and selection.
- Cold or hot forging to form the basic hex nut shape.
- Precision CNC machining to cut threads and apply dual slots.
- Thermal treatment for optimal hardness and tensile strength.
- Surface treatment (zinc plating or black oxide) for enhanced corrosion protection.
- Final inspection to ensure dimensional accuracy and performance under load.
Typical Industries & Applications
These self-locking hex nuts are commonly used in:
- Automotive engines and suspension systems
- Railway applications
- Aerospace structures
- Heavy-duty construction equipment
- Wind turbines and energy sectors
- Agricultural machinery
- Marine and offshore equipment
Their ability to withstand high stress and resist loosening under vibration makes them crucial in safety-critical joints.
Key Features and Competitive Advantages
High-Quality Carbon Steel
Made with premium carbon steel, these nuts offer a great balance of strength, durability, and cost-effectiveness.
Precision Manufacturing
Utilizing state-of-the-art CNC machines, tight tolerances are maintained, and thread quality is ensured for secure fittings.
Advanced Surface Treatment
Available coatings such as zinc plating or black oxide enhance corrosion resistance, extending life in harsh environments.
Strong Customization Capabilities
Flybear Fastener can tailor the product’s size, thread pitch, and coating type based on specific drawings or application needs.
Reliable Supply Chain
With stored inventory and efficient logistics, we ensure prompt delivery worldwide.
Superior After-sales Service
Our technical team offers support from pre-sales consulting to post-sales service, minimizing downtime for your operations.
Quality Control and Testing
We follow a strict ISO 9001:2015 compliant quality management system. Each batch of nuts undergoes:
- Dimensional inspection using thread gauges and micrometers
- Tensile and hardness testing
- Corrosion testing (salt spray)
- Vibration and fatigue testing
All tests are meticulously documented and can be shared upon request.
Product Selection & Purchasing Guide
Choosing the right Dual Slotted Self-locking Hex Nuts depends on several factors:
- Load type: static or dynamic
- Application environment: corrosive, high heat, or high vibration
- Thread compatibility: metric or inch
- Standard conformance: Ensure NF E 25-411 compliance
- Surface treatment: Choose based on corrosion conditions
Speak to our engineering specialists for custom selections or non-standard applications.
Additional Related Products
If you’re dealing with high vibration machinery or assemblies that demand secure fastening, you may also consider:
- Nylon Insert Lock Nuts
- Prevailing Torque Lock Nuts
- All-Metal Lock Nuts
- Flange Lock Nuts
Each of these fasteners offers unique locking features suited to specific industry requirements.
Conclusion
We are committed to providing cutting-edge fastener products that address diverse industrial needs. With a focus on innovation and customer satisfaction, Flybear Fastener delivers not only exceptional products but also complete engineering solutions that optimize your assembly and improve cost efficiency.
Explore our full range of high-strength locking nuts, or contact us today to request a quote and find the ideal product for your project.
“We always hold the belief of ‘Quality First, Customer Foremost’, aiming to provide clients with premium fastener products and one-stop fastener solutions.”
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