Stainless Steel Dual Slotted Self-locking Hex Nut NF E 25-411
Product Overview
Dual Slotted Self-locking Hex Nut NF E 25-411 is a specialized type of mechanical fastener designed for critical applications where vibration resistance and self-locking capabilities are essential. Manufactured as per NF E 25-411 standard, this nut combines a hexagonal shape for easy installation with dual slotted features that allow for secure mechanical locking. Constructed from premium-grade stainless steel, it offers superior corrosion resistance, making it ideal for use in demanding industrial and outdoor environments.
At Flybear Fastener, we manufacture and supply high-performance self-locking hex nuts with guaranteed dimensional precision, strength, and durability.
Product Specification Table
| Parameter | Description |
|---|---|
| Product Name | Dual Slotted Self-locking Hex Nut |
| Standard | NF E 25-411 |
| Material | Stainless Steel |
| Finish/Coating | Natural / Passivated |
| Thread Type | Metric |
| Sizes Available | M3 – M48 |
| Locking Feature | Dual-Slotted Lock Mechanism |
Technical Parameters
| Feature | Specification |
|---|---|
| Thread Tolerance | 6H |
| Hardness Range | 250-320 HV |
| Min. Proof Load | As per ISO 3506-2 |
| Tensile Strength | ≥700 MPa (dependent on nut size) |
| Operating Temperature | -50°C to +300°C |
| Coefficient of Friction | 0.15 – 0.20 |
Material Introduction & Manufacturing Process
The Dual Slotted Self-locking Hex Nut is made of Austenitic stainless steel, predominantly A2-70 (or optional A4-80 for marine use), known for its excellent strength-to-weight ratio, resistance to corrosion, and non-magnetic properties.
Production Process:
- Raw Material Sourcing – Certified stainless steel wires or rods.
- Cold Forming – Shaped under controlled pressure into hex form.
- Slotting – Precision dual-slot cutting to meet locking performance.
- Thread Tapping – Metric threads are machined to exact tolerances.
- Heat Treatment – Optional for specific strength requirements.
- Surface Passivation – Enhances corrosion resistance.
- Quality Inspection – 100% dimension and thread conformity check.
- Packaging – Packed in anti-rust polybags and export cartons.
Applications in Key Industries and Common Use Cases
Thanks to its self-locking and anti-vibration properties, the Dual Slotted Self-locking Hex Nut NF E 25-411 is frequently used in critical assemblies across various sectors including:
- Aerospace and Defense
- Automotive Engine and Suspension Systems
- Offshore and Marine Equipment
- Railway and Track Construction
- Wind and Solar Energy Installations
- Heavy Machinery and Agricultural Implements
It is especially valued in environments subject to high mechanical stress or vibration, where traditional fasteners might loosen over time.
Product Advantages and Core Competitiveness
Superior Material Selection
Our nuts are crafted from top-quality stainless steel ensuring long life and resistance to environmental degradation.
Precision Manufacturing
Tight threading tolerance and precision slot cutting ensures optimal locking under stress and repeated use.
Advanced Surface Finishing
Passivation and optional coatings (on request) provide robust rust and chemical resistance.
Strong Customization Capability
At Flybear Fastener, we offer bulk customization based on customer drawings, blueprints, or application specifications.
Inventory & Fast Delivery
Large in-stock inventory ensures rapid order fulfillment and minimizes production downtime for our clients.
Dependable Support & After-Sales Service
A dedicated technical support team offers timely advice, troubleshooting, and maintenance tips for all applications.
Company Testing and Quality Control
Each Dual Slotted Self-locking Hex Nut NF E 25-411 produced by Flybear Fastener undergoes strict quality assurance processes. Our QC lab is equipped with state-of-the-art measuring instruments, including:
- Optical and Thread Gauges
- Salt Spray Testers for coating durability
- Tensile Strength Test Machines
- Dimensional Inspection Systems
- Hardness Testers
We follow ISO 9001:2015 quality management protocols to ensure all products meet or exceed customer expectations.
Selection and Procurement Guide
To select the right NF E 25-411 self-locking hex nut, consider the following factors:
- Thread Size & Pitch
- Application Load & Environmental Conditions
- Required Torque Settings
- Material Compatibility (especially for corrosion-prone situations)
Engineers and procurement teams are encouraged to contact our technical department for guidance on choosing the ideal specification, or for assistance with your Bill of Materials (BOM).
Conclusion and Company Promotion
Choosing the Dual Slotted Self-locking Hex Nut NF E 25-411 from Flybear Fastener ensures optimal locking performance, long-term reliability, and corrosion resistance in even the most demanding applications. We proudly support clients across the globe with a full line of professional fastener products and tailored industry solutions.
We always uphold the philosophy of “Quality First, Customer Supreme”, and are committed to delivering high-quality fastener products paired with one-stop solutions tailored to meet your specific industry requirements. For more details, catalog access, or application support, please don’t hesitate to contact us for a prompt response and competitive quotation.
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