Thread loosening is the "invisible killer" of mechanical equipment. However, the 30° wedge nut thread, with its revolutionary structural design, fundamentally solves the loosening problem, making it the first-choice fastening solution for scenarios with high vibration and high safety requirements, ensuring every connection is as firm as a rock.

Core Advantage 1: Tighter Under Vibration, Anti-loosening Performance Crushes Traditional Threads

• The unique 30° wedge-shaped inclined surface structure converts axial loosening force into radial locking force. Its normal pressure is twice that of ordinary threads, and the anti-loosening friction is increased by more than 3 times.
• Verified by Junkers vibration test: After 2 minutes of lateral vibration, ordinary nuts loosen completely, torque-locking nuts lose 70% of their locking force, while the 30° wedge nut still maintains complete self-locking capability.
• Under extreme environments such as 8-degree seismic intensity and level 12 gusts, the preload attenuation rate is only 1/5 of that of ordinary threads. It has passed stringent certifications such as DIN 65151 and GJB715.3A.

Core Advantage 2: Uniform Load Distribution, Extends Fastener Service Life

• It subverts the defect of ordinary threads where 80% of the load is concentrated on the first 2-3 threads. Instead, the load is evenly distributed along the entire thread length, completely eliminating stress concentration.
• Photoelastic tests by Tongji University prove that each thread tooth bears force evenly, avoiding bending and shear deformation. This increases the fatigue life of bolts and nuts by more than 5 times, and extends the service life of dissimilar material connections from 50,000 cycles to 300,000 cycles.
• For soft materials such as aluminum alloy, it can effectively solve the problem of thread slipping, and the sealing performance and structural stiffness are more stable.

Core Advantage 3: Universal & Convenient, Reduce Costs and Increase Efficiency Without Hassle

• It is compatible with ISO standard external threads, requiring no special bolts. It can directly replace traditional nuts, and existing assembly tools are fully compatible.
• No auxiliary components such as spring washers and locking washers are needed; the anti-loosening function is integrated into a single nut. This saves axial installation space, simplifies the assembly process, and reduces construction costs.
• After 50 repeated disassembly and assembly cycles, the locking force still maintains more than 50% of the initial value. It can be reused, greatly reducing spare parts consumption and maintenance costs.

Core Advantage 4: Standard Certification, More Reliable for Full-scenario Adaptation

• It complies with the national standard GB/T37462-2019 and the industry standard JB/T10971-2010. Precision and medium precision grades are available to meet different working condition requirements.
• From automobile power assemblies and high-speed rail bogies to wind turbine towers and aerospace equipment, it has been verified in many major national projects. It is suitable for key fasteners such as wheel bolts and cylinder head bolts.