A leading Korean electric scooter manufacturer sought a fastening solution that could withstand the increased shocks and vibrations associated with higher-speed models. The most critical area was the joint between the scooter’s hollow frame and the front fork, where typical self-lock nuts failed to meet both safety and torque limitations. The company needed a low-torque, anti-loosening fastener that wouldn’t compromise the mobility of moving components or require specialized tools for maintenance. That’s where the HARDLOCK Nut proved invaluable.

• The scooter’s hollow frame and mobile joints could not support high torque levels.
• High-torque fasteners reduced vibration-related loosening but also restricted the agility of moving parts.
• Regular road vibrations (bumps, grooves) posed a serious safety risk due to nut loosening.
• Spring-type self-locking nuts required special tools and were difficult to install in tight spaces.
• Prevailing torque nuts that increased thread friction failed to prevent loosening during dynamic testing.

HARDLOCK Nut’s on the front fork

• The HARDLOCK Nut’s wedge-locking principle ensures complete thread engagement without relying on high torque.
• Secure locking at any position allows precise installation without interfering with moveable components.
• Reusable design simplifies inspection and maintenance without needing replacement parts.
• No need for special tools or techniques, reducing labor costs and installation time.

• Zero loosening of critical joints under shock and vibration.
• Simplified maintenance and inspections improved service efficiency.
• Extended part lifespan and reduced operational costs.
• Enhanced rider safety, addressing a key concern in high-speed personal mobility devices.