Original Makita part 251830-4 — Guide screw, M10 × 34 mm. This is the factory replacement guide/knurled screw used on Makita plunge routers; the 34 mm length and M10 diameter match the factory thread and head profile so it fits the guide/templet/base assembly exactly.
Fits (examples): Makita 3612C and related models such as 3612, 3612BR and 3600B — the part is shown in the official parts breakdowns for those routers as guide/fastening screw 251830-4.
Why this part matters: getting the original Makita 251830-4 restores the correct head profile and thread engagement for the depth/guide hardware so the templet guide and base clamp securely and the router functions as designed.
(Part number: 251830-4; specification: M10 × 34 mm; genuine/original Makita.)
Jump straight to the Makita spare parts diagrams:
