Genuine Makita collet nut — part 763664-8. Direct replacement collet nut for Makita die grinders GD0600 and GD0601; it secures the collet and holds 6 mm (and 1/4") accessories (and is the common nut used with the 3 mm, 6 mm, 1/8" and 1/4" collet cones on those models).
Precision-machined metal construction designed to withstand repeated tightening and loosening without deforming, helping maintain bit concentricity and reduce slippage during high‑speed grinding and deburring. The nut is sized for a 13 mm wrench for installation/removal.
Sold as a single, original Makita replacement part for restoring proper accessory clamping and safe operation of your GD0600 / GD0601 die grinder.
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