Original Makita 256496-5 — Shoulder Pin 4: a precision-formed metal shoulder pin (4 mm) designed to locate and retain components inside the gear housing / spindle-lock area on select Makita cordless grinders and jointers. It replaces bent or worn pins that cause misalignment or play in the spindle assembly and is installed into the gear housing (a pair of pliers is often used during reassembly). Fits a range of models including BGA450, BGA452, DGA450, DGA452 and BPJ140 and BPJ180 biscuit‑joiner. This is an original Makita replacement part, listed as “Shoulder Pin 4” in Makita parts.
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