The Hardware Key secures the interface between the mating components. It transmits force by fitting into matching slots, allowing power to flow without slippage. This part maintains alignment so the connected components rotate as a single unit. Its accurate fit ensures consistent torque transfer during starting, running, and stopping operations.

Attributes:
• Maintains consistent torque flow during frequent start-stop cycles.
• Enables smooth start-up by eliminating backlash in the connection.
• Allows quick assembly and removal for maintenance tasks.

Applications:
The Hardware Key is used in mechanical assemblies to lock two components together so that torque and force pass directly without relative movement.