304 Stainless Steel A2-70 Metal Insert Lock Nut DIN980M
304 stainless steel A2-70 metal insert lock nut DIN980M is a precision self-locking fastening component designed for applications requiring reliable thread retention, vibration resistance, and corrosion protection. The 304 stainless steel A2-70 metal insert lock nut DIN980M uses a special metal insert locking structure to generate prevailing torque, preventing loosening during operation without relying on nylon elements.
The 304 stainless steel A2-70 metal insert lock nut DIN980M is widely used in automotive assemblies, industrial machinery, electrical equipment, transportation systems, and OEM manufacturing applications where secure fastening and long-term stability are required.

Product Overview
The 304 stainless steel A2-70 metal insert lock nut DIN980M is a hexagonal all-metal locking nut manufactured according to DIN980M requirements. Unlike nylon insert lock nuts, this design uses a stainless steel metal insert inside the nut body to create friction between the internal thread and the mating fastener.
The A2-70 stainless steel grade provides a combination of corrosion resistance and mechanical strength. Compared with standard stainless steel nuts, the 304 stainless steel A2-70 metal insert lock nut DIN980M offers improved locking reliability under vibration, repeated loading, and temperature variation.
The metal insert structure makes this nut suitable for applications where non-metallic locking components are unsuitable due to heat, chemicals, or environmental conditions.
Product Specifications
| Item | Description |
|---|---|
| Product Name | 304 Stainless Steel A2-70 Metal Insert Lock Nut |
| Standard | DIN980M |
| Material | 304 Stainless Steel |
| Material Grade | A2-70 |
| Nut Type | Hex All Metal Lock Nut |
| Locking Type | Metal Insert Locking |
| Thread Standard | Metric Thread |
| Size Range | According to DIN980M Standard |
| Thread Direction | Right Hand |
| Surface Finish | Natural Stainless Steel |
| Insert Material | Stainless Steel Metal Insert |
| Packaging | Bulk / Carton / OEM Packaging |
| Customization | Size, thread, packaging available |
Technical Parameters
| Parameter | Value |
|---|---|
| Material | 304 Stainless Steel |
| Strength Grade | A2-70 |
| Tensile Strength | ≥700 MPa |
| Yield Strength | According to A2-70 Requirement |
| Hardness | According to Material Specification |
| Corrosion Resistance | Excellent |
| Locking Method | Metal Insert Prevailing Torque |
| Temperature Resistance | Higher Than Nylon Insert Type |
| Manufacturing Standard | DIN980M |
Materials and Manufacturing Process
The 304 stainless steel A2-70 metal insert lock nut DIN980M is manufactured through controlled stainless steel processing, precision threading, insert assembly, and inspection procedures.
- Raw material selection: High-quality 304 stainless steel
- Material verification: Chemical composition and material certification inspection
- Nut forming: Cold forging process for improved strength and consistency
- Thread machining: Precision internal thread tapping
- Metal insert installation: Accurate positioning of locking insert component
- Cleaning process: Removal of manufacturing residues
- Surface treatment: Natural stainless steel finishing and cleaning
- Inspection: Thread gauge testing, locking torque testing, dimensional inspection, and surface inspection
- Packaging: Protective industrial packaging for transportation
Each 304 stainless steel A2-70 metal insert lock nut DIN980M is manufactured under strict quality control to maintain stable locking performance.
Applications of the Product
The 304 stainless steel A2-70 metal insert lock nut DIN980M is suitable for industries requiring secure fastening under vibration and environmental exposure:
- Automotive industry: Vehicle components and mechanical systems
- Machinery manufacturing: Equipment assemblies and moving parts
- Industrial automation: Precision equipment installation
- Electrical equipment: Control panels and mounting structures
- Food processing equipment: Stainless steel machinery
- Marine applications: Corrosion-resistant fastening systems
- Construction equipment: Outdoor mechanical assemblies
- OEM manufacturing: Customized industrial products
Its all-metal locking structure provides reliable performance in demanding fastening environments.
Why Choose This Product
- A2-70 stainless steel material with excellent corrosion resistance
- DIN980M metal insert locking structure
- No nylon component required
- Reliable anti-loosening performance
- Suitable for higher temperature applications
- Stable prevailing torque characteristics
- Accurate thread engagement
- Long service life
- OEM customization capability
The 304 stainless steel A2-70 metal insert lock nut DIN980M provides a dependable fastening solution for industrial applications requiring secure mechanical connections.
Why Choose Flybear
Flybear is a professional manufacturer specializing in industrial fasteners and customized fastening solutions.
- Experience in stainless steel locking nut manufacturing
- Support for DIN standard fastening products
- Advanced cold forging and thread processing capability
- Strict material control and production management
- OEM/ODM customization support
- Stable supply capability for bulk orders
- Global export experience
- Technical support for customized fastening solutions
Flybear provides reliable fastening products for automotive, machinery, industrial equipment, and OEM customers worldwide.
Quality Inspection and Control
Quality control is performed throughout the manufacturing process:
- Stainless steel chemical composition analysis
- Raw material certificate verification
- Thread gauge inspection
- Metal insert installation inspection
- Locking torque testing
- Dimensional accuracy inspection
- Surface finish inspection
- Packaging inspection
All production processes follow ISO quality management system requirements to ensure consistent product reliability.
Selection Guide
When selecting a 304 stainless steel A2-70 metal insert lock nut DIN980M, consider:
- Matching bolt or screw thread specification
- Required locking performance
- Operating temperature range
- Corrosion exposure conditions
- Mechanical load requirements
- Installation environment
Correct selection ensures stable fastening performance and extended service life.
FAQ
1. What is DIN980M metal insert lock nut used for?
DIN980M metal insert lock nuts are used for applications requiring reliable anti-loosening performance under vibration and dynamic loads.
2. What is the difference between DIN980M and DIN980V lock nuts?
DIN980M uses a metal insert locking structure, while DIN980V uses a different all-metal deformation locking design.
3. What does A2-70 mean for stainless steel nuts?
A2-70 indicates an austenitic stainless steel fastener grade with a minimum tensile strength of 700 MPa.
4. Can DIN980M stainless steel lock nuts be customized?
Yes, Flybear supports customized sizes, thread specifications, materials, and packaging.
5. Why choose metal insert lock nuts instead of nylon lock nuts?
Metal insert lock nuts provide better temperature resistance and avoid limitations caused by nylon components.
We always adhere to the philosophy of quality first and customer first, providing customers with high-quality fastener products and one-stop fastener solutions.
Contact us for quotation, customization, and technical support via Contact Us.




