Original Makita HY00000520 — Sleeve (SLEEVE 4), 4 mm
Keep your Makita nailer running true with this genuine Makita replacement sleeve (part no. HY00000520). This small cylindrical sleeve — listed as "SLEEVE 4" — is a 4 mm size sleeve/bushing used in the tool’s top-cap/nose area to maintain alignment and reduce wear between moving parts. It’s sold individually and is a direct-fit Makita part for affected models.
Example models the part is used in
- Makita AF601 (2-1/2" straight finish nailer) — HY00000520 is listed for AF601.
- Makita AN924 (90 mm framing nailer) — HY00000520 appears as SLEEVE4 in the AN924 parts diagram/list.
Key details
- Part number: HY00000520 (Makita / genuine Makita).
- Part name: Sleeve 4 (sleeve / bushing).
- Size: 4 mm (sleeve size).
- Typical location/function: used around the top-cap/nose/driver interface as an alignment sleeve to limit play and wear. (See Makita parts diagrams showing SLEEVE4 in the top-cap area for similar AF-series nailers.)
Why fit this part
A worn or damaged sleeve can cause increased play, misfeeds, or premature wear on adjacent seals and the driver assembly. Replacing the sleeve restores correct alignment and helps the tool feed and fire consistently.
Note: Confirm HY00000520 matches the sleeve number on your tool’s parts diagram before ordering to ensure compatibility with your exact model and serial range.
Jump straight to the Makita spare parts diagrams:
