Original Bosch union nut — part number 1609203V43 — designed as a direct replacement for Bosch routers.

This union nut comes complete with an 8 mm clamping collet (size : Ø 8 mm) and matches the factory collet seat and thread used on the compatible routers.

Confirmed fit for Bosch POF 1200 AE (type 3 603 B6A 001) and POF 1400 ACE (type 3 603 B6C 701); check your tool’s type number to ensure exact compatibility.

A genuine Bosch replacement that restores correct bit clamping and runout tolerance so your router performs as intended — a small but critical Bosch power tool parts item to have when repairing a router. Keep it with your essential power tool parts for an efficient, straightforward repair.

Browse our full range of Bosch router parts.