Sizes from 6mm Up available

The BOPA-LOCK securing system uses geometry to safely lock bolted joints in the most critical applications.

This unique wedge-locking system offers the following advantages:
  • Maximum Safety
  • Resists loosening caused by vibration and dynamic loads
  • Ease of Assembly and Disassembly
  • Locking Function is not affected by lubrication
  • Positive Locking at low and high preload levels
  • Controllable preload
  • Same temperature characteristics as standard bolt/nut
  • Reusable
Tension makes the bolt self-locking

The key is the difference in angles. Since the cam angle is larger than the thread pitch , the pair of washers expand more than the corresponding pitch of the thread. BOPA-LOCK washers positively lock the fastener in a joint which is subjected to extreme vibration or dynamic loads.

Assorted Box Assorted Pairs
6mm 80
8mm 60
10mm 40
12mm 30
16mm 30

SABS Tested