Stainless Steel All Metal Lock Nut DIN 980 Self-locking Nut

When Wanluo manufacturers produce Stainless Steel All Metal Lock Nut DIN 980 Self-locking Nut, they rely on the permanent mechanical locking force generated by the precise deformation of the thread. After installation, the nut can maintain a stable anti-loosening effect continuously, unaffected by temperature changes, slight oxidation, or long-term vibrations.

Product Compatibility

This product is compatible with heavy industrial machinery, high-temperature pipeline equipment, facilities with continuous vibration conditions, and outdoor durable equipment assemblies. It can maintain a tight state for a long time, addressing the issues of bolt loosening and equipment detachment after long-term operation. It is a highly reliable anti-loosening fastening solution for industrial heavy-load scenarios.

Structural Principle & Core Performance

DIN 980 metal lock nuts adopt precision cold forging and unilateral thread shrinking deformation process. The local micro-deformation of the internal thread forms elastic interference fit with the bolt thread, generating continuous and stable friction clamping force. This physical self-locking method will not fail due to temperature changes, aging or fatigue. The overall all-stainless-steel structure features integrated molding, high structural density and strong shear and tensile resistance. It can maintain excellent anti-loosening effect after repeated disassembly and long-term alternating load operation. Compared with nylon lock nuts, it has wider temperature adaptability and longer service life, meeting the stringent fastening requirements of harsh industrial working conditions.

Product Parameter

Why Choose US ?

We are a professional direct manufacturer integrating R&D, production, precision processing and export sales. We have independent forging, stamping, CNC, laser cutting and casting workshops. We control the whole production chain from raw metal material procurement to finished product packaging. No middleman markup, stable supply capacity and competitive factory direct price for all bolts, nuts, lifting fasteners and custom metal parts.

FAQ

Q1: What is the difference between DIN 980 all metal lock nut and nylon lock nut? 

A1: DIN 980 is an all-metal structure with elastic thread self-locking, suitable for high temperature, low temperature and strong vibration scenarios. Nylon lock nuts rely on nylon ring clamping, which cannot withstand high temperature and is easy to age. Metal lock nuts have wider application range and longer service life.

Q2: Will repeated disassembly affect the self-locking effect? 

A2: The precision deformed thread has good metal elastic recovery capability. It can withstand multiple cycles of disassembly and assembly while maintaining stable interference locking force, no loosening failure occurs during normal service life.

Q3: Are all metal lock nuts suitable for high-temperature equipment? 

A3: Absolutely. Without any non-metal parts, it can work stably in high-temperature environments up to 300℃, which is the preferred anti-loosening fastener for boiler equipment, thermal pipelines and high-temperature mechanical structures.

Q4: Does the metal interference thread cause bolt thread damage? 

A4: The thread deformation is controlled within the standard elastic range with smooth tooth surface. It will not scratch or damage the matched bolt thread, ensuring good assembly compatibility and structural integrity.

Q5: What scenarios are DIN 980 metal lock nuts mainly used for? 

A5: They are widely used for vibration-intensive, high-low temperature alternating and harsh corrosion environments, including automotive chassis parts, mechanical transmission systems, power equipment, marine facilities and industrial high-temperature equipment.

Actual performance tests

1. High and low temperature endurance test

Our Stainless Steel All Metal Lock Nut DIN 980 Self-locking Nut has undergone a cycle test of -40℃ cold freezing and +200℃ hot baking. The all-metal structure shows no deformation or material deterioration, and the thread self-locking force remains stable and does not diminish. Compared with traditional nylon locking nuts, in high-temperature environments, there will be no problem of plastic melting and loosening, nor will there be cracking due to low-temperature brittleness. The tightening performance remains stable throughout extreme temperature conditions.

2. High-frequency vibration anti-loosening durability test

Equipped with an industrial standard vibration test bench, it undergoes continuous high-frequency reciprocating vibration for over 100,000 times. The nut does not automatically loosen or shift, and the thread engagement is tight. The permanent mechanical self-locking structure can continuously counteract the vibration force generated by equipment operation, suitable for long-term continuous operation scenarios of construction machinery and power equipment.

3. Repeated disassembly and locking performance test

After multiple disassembly and reassembly tests, the thread deformation self-locking function remains effective, the locking damping is stable, and there will be no situation where the locking fails after multiple uses or the engagement loosens. The reusability of the accessories is higher, reducing the maintenance and replacement costs of the equipment.

4. Standard accuracy matching test

The entire process is produced in accordance with DIN980 German standard tolerances, with a high compatibility with standard bolts of the same specification. The engagement is smooth without jamming or over-tightening, the assembly fit is high, and the locking after tightening is uniform, without problems such as unilateral force or local thread breakage.

5. Material weather resistance stability test

The stainless steel material has undergone salt spray and humid environment simulation tests. The anti-rust and corrosion resistance performance is excellent, and it is not prone to rust and jamming in outdoor, humid, and slightly corrosive conditions for a long time. This can ensure the long-term stable operation of the equipment and reduce the frequency of subsequent maintenance.