Genuine Makita lock nut 224543-0 — a replacement flange/lock nut used to secure cutting and grinding discs on Makita 180–230 mm angle grinders. Thread: M14 x 2; outer flange diameter: 45 mm. It's the direct-fit lock nut used on M14 spindles to clamp 180 mm and 230 mm wheels and restore proper disc seating and safe operation. This genuine Makita lock nut is part of Makita parts for angle grinders.

Example compatible models: GA7020; GA4540/C/R and GA4541/C/R; GA5040/C/R and GA5041/C/R; GA6040/C/R — and it is also used on many of the common Makita 180–230 mm grinder (including several GA7010C / GA7020, 9503BH)

Simple to install — screws onto the M14 spindle and secures the disc with the matching spanner or lock-nut tool supplied for your grinder. Use this part number (224543-0) when replacing a worn or damaged locking flange to restore correct clamping and safe cutting/grinding performance.

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