Hitachi SPECIAL SCREW (LEFT HAND) M6 - 334721

Original Hitachi part 334721 — Special left‑hand M6 screw used to secure the chuck/spindle assembly on Hitachi/Hikoki 14–18 V drill/driver models. It’s a left‑hand (reverse) M6 thread designed to resist loosening during normal drill rotation and restore correct chuck retention and alignment.

Key details

- Thread: M6 (left‑hand).

- Overall length: 23.5 mm; threaded length: 12 mm. Steel construction for strength and long service life.

Example models it fits

- Commonly used in Hitachi/Hikoki DV and DS series such as DV18DSDL , DV18DL2, DV14DL2 and DV14DSDL, Check your tool’s exploded parts list for position 334721 to confirm fit.

This genuine Hitachi special screw is supplied ready to install — ideal for restoring secure chuck retention and eliminating play or vibration caused by a missing or worn retaining screw.