Locking assemblies shaft coupling (single/double plate springs) TLK9 TLK10 TLK14 Lcoking assemblies coupling TLK9 includes locking assemblies coupling (single plate springs) and locking assemblies coupling (double plate springs). Body material is steel. Locking assemblies shaft coupling (single plate springs) keeps following features: 1. excellent response and high torque capacity; 2. zero backlash; 3. identical clockwise and anticlockwise