Original Makita replacement thumb screw — part number 266898-7. This is a thumb screw, M4 × 8 mm, designed for hand-tightening without tools and to match the fastening points on Makita cut‑out / chop-saw assemblies. It is listed in Makita parts breakdowns alongside the compression spring (234332-5) and flat washer (253186-1) that it works with in the same sub‑assembly.
Example models shown in Makita parts diagrams that use 266898-7 include DCO180 / DCO180Z, DCO181 (check your model’s parts diagram to confirm exact placement).
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