Makita SPIRO LOCK WASHER 30 HR2300-1 - 257932-4

Genuine Makita Spiro Lock Washer 30 — part no. 257932-4

Replace the locking washer that secures the drive/flange stack in a range of Makita rotary and combination hammers. This is the genuine Makita spiro-style lock washer listed as "Spiro Lock Washer 30" (part 257932-4); it’s the 30 mm lock washer used alongside the flat washer and driving flange in the tool’s hammer/drive assembly.

What it is and why it matters:

- Spiro-style lock washer, nominal 30 mm size, designed to hold the flat washer / driving flange stack and resist rotational loosening under hammering loads. It’s supplied as a single piece (qty 1 in parts diagrams).

Example models this part fits (representative list):

- HR2630, HR2631

- HR2600, HR2601

- HR2650 / HR2651

- DHR242 / DHR243 / DHR280 / DHR281 (cordless rotary hammers)

- BHR242 / BHR243 (corded/combination hammers)

- M8701

Notes:

- Sold as the original Makita part to match the factory fit and function; refer to your tool’s parts diagram to confirm item position and quantity before installation.

If you need the exact replacement for a specific model, this genuine Makita 257932-4 is the part called out in Makita parts breakdowns for the models listed above.

Jump straight to the Makita spare parts diagrams:

• Makita BHR242 Parts
• Makita BHR243 Parts
• Makita DHR242 Parts
• Makita DHR243 Parts
• Makita DHR280 Parts
• Makita DHR281 Parts
• Makita HR2600 Parts
• Makita HR2601 Parts
• Makita HR2630 Parts
• Makita HR2650 Parts
• Makita M8701 Parts

Browse our full range of Makita hammer drill parts.