Testing the HARDLOCK
The HARDLOCK Nut has successfully met the testing requirements of multiple vibration and impact tests, including the NAS3350 and 3354 National Aerospace Standard. These tests certify that our products provide effective locking force and remain in a stable locked condition
For RAIL specific test information click here.

Vibration testing based on the National Aerospace Standard (NAS3350) demonstrate the overwhelming superiority of the locking effect when compared with other products under identical conditions.