Hitachi 325-491 Spare Part - Wrench

711272 supersedes older part numbers: 325-491

Genuine Hitachi pin spanner / lock‑nut wrench — part number 711272 — designed for Hitachi/HiKOKI disc sanders and angle grinders. The tool is a two‑pin pin spanner with overall length 230 mm, pin diameter 5.5 mm and pin centre (pitch) 35 mm, made to engage the holes in flange/lock nuts used on 180–230 mm (≈180–230 mm) abrasive discs.

What it does: use this original Hitachi pin spanner to hold or lever the flange/lock nut while you press the spindle lock and unscrew the nut — it’s the correct tool for changing or securing sanding discs, backing pads and grinding wheels without damaging the spindle or nut. Typical weight/size makes it convenient in a toolbox.

Example fitment: listed in Hitachi parts diagrams for the SAT‑180 disc sander and the S18SA 180 mm disc sander, and generally sold as the matching spanner for most 180–230 mm Hitachi/HiKOKI grinders and sanders that use a two‑hole flange nut. (Check your machine’s parts diagram to confirm the part number matches your model.)

In short: if your Hitachi/HiKOKI 180–230 mm grinder or 180 mm disc sander has a two‑hole flange lock nut that needs a precise 5.5 mm pin spacing and 35 mm pitch, this original Hitachi 711272 pin spanner is the correct replacement to remove and refit the accessory safely.