Genuine Makita part 252154-1 — Hex Nut M8‑13. This original Makita hex nut has an M8 thread (8 mm nominal diameter) and a 13 mm width across flats (the standard wrench/socket size for M8 hex nuts). It’s the same hex nut shown in Makita parts breakdowns for their belt sanders and related tools.
What it fits: documented fitment includes Makita belt sanders and related models such as 9404, 9902, 9903, 9910, 9911, 9920 and the blower DUB363 in various parts diagrams and parts lists — this is the nut called out where the drive/tension roller and related assemblies are secured. Use this part to replace a worn, rounded or missing M8 nut that secures rollers, shafts or covers on those models.
Key specifics (metric):
- Thread: M8 (nominal 8 mm).
- Width across flats: 13 mm (standard for M8 hex nuts).
- Typical nut thickness (ISO/DIN for an M8 hex nut): ~6.5 mm; standard coarse thread pitch: 1.25 mm.
- Sold as a single hex nut (part no. 252154-1). These dimensions match metric hex‑nut standards commonly used in Makita assemblies.
Why this part matters: the M8‑13 hex nut is a small but load-bearing fastener on belt sanders — if the nut is rounded, stripped or missing the roller/tension assemblies can loosen, cause belt tracking problems, or damage other components. Replacing it with the original Makita part restores the correct fit (13 mm wrench size) and thread engagement for the mating shaft.
What you get: one original Makita 252154-1 hex nut (M8‑13). It’s compact, straightforward to install with a 13 mm spanner or socket, and commonly used where an M8 hex nut is specified in Makita belt sander exploded views.
Note: this description references Makita parts diagrams and standard metric nut dimensions so you can confirm fit against your machine’s parts breakdown or service manual before installation.
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