Hitachi Lock Screw - 971-847

Genuine Hitachi lock screw — part number 971847. This plated steel fixing screw secures the lock piece/collet assembly on Hitachi/Metabo routers and trim tools, replacing the worn or missing retaining screw that holds the chuck/collet components together.

Fits many Hitachi / Metabo HPT / HiKoki router and trimmer models (examples: M8, M8V, M12V and related TR8 / TR12 style routers), where it mates with the lock piece (971848) and wave washer positions in the collet/chuck assembly.

Specification notes: this is the metric M6-style fixing screw commonly used by Hitachi in these routers, sized and shaped to accept standard tool drives for easy replacement. Use it when your router’s chuck/collet no longer locks securely or the original screw is damaged.

Simple to fit and intended as a direct replacement to restore proper locking action so you can get the tool back to safe, reliable use.