Hitachi Lock Spring (a) - 325-183

Genuine Hitachi lock spring — part no. 325183 (listed as "LOCK SPRING (A)") for Hitachi/HiKOKI routers.

This part is primarily used in the spindle lock assembly of Hitachi and HiKOKI heavy-duty variable-speed routers (such as the popular M12V2, M12SA2, M12VE, and M8SA2 models). It provides the return tension for the spindle locking push button. Because users forcefully press this button down while using a wrench to tighten or change heavy router collets, the internal spring takes a lot of stress, loses its rebound tension, or gets lost during a motor armature strip-down.

An original Hitachi spare, this 325183 lock spring is a simple, direct-fit part to restore reliable bit retention so your router runs safely again — a common item among parts for power tools.