OHTA CO., LTD. Product Lineup

Bolt and nut loosening, drop prevention spring. Can be easily installed using commercially available socket wrenches. Passed tests using an impact-type vibration testing machine compliant with NAS3350 standards. Available sizes range from M4 to M36. *For more details, please download the PDF or feel free to contact us.

The Smart Hyper Lock Nut is a next-generation locking nut designed to maintain reliable fastening even in high-vibration and high-load environments. Its unique "Hyper Load Mechanism" automatically equalizes axial force to prevent loosening. - Automatic Axial Force Correction Structure The internal spring cam absorbs minor displacements after fastening, maintaining optimal tightening force at all times. - High Vibration Resistance Achieves zero loosening even in high-vibration environments such as railways, construction machinery, and wind power generation. - Reusable Design Allows for repeated use due to surface treatment that minimizes wear and high-precision screw machining. - Easy Installation - Cost Reduction

The T-Spring is a high-performance anti-loosening fastener that can be "retrofitted" to existing bolt connections. After tightening the nut, simply insert it into the bolt's excess length to exhibit a powerful anti-loosening effect, maintaining fastening strength for a long time even in vibrating environments. - Retrofittable - Resistant to vibration (clears aviation standard tests) - No torque management required - Achieves low cost compared to anti-loosening nuts - Excellent corrosion resistance with SUS304