Original Makita part 6411501300 — wing nut designed for Makita brushcutter assemblies. This genuine Makita metal wing nut is item 15 in the RBC525E parts diagram and is used to secure the clutch/coupling area on compatible brushcutter models.

Quick details:

- Part number: 6411501300 (Makita).

- Function: hand-tightening wing nut for fastening the clutch/coupling housing on specified Makita brushcutters.

- Thread compatibility: the part is shown in the exploded view alongside M6 fasteners, so it is intended to mate with a 6 mm metric shaft/thread (inference based on the Makita parts diagram). For reference, standard M6 wing-nut dimensions follow DIN 315 (typical wing span ~33–39 mm, boss height ~13–20 mm).

Condition and use: sturdy metal construction for vibration-prone garden equipment; designed for tool-free hand tightening and secure retention of the clutch/coupling cover. Replace a worn or lost wing nut with this original Makita part to restore correct fit and safe operation.

(Part listings and exploded diagrams used to confirm fitment and function.)