Description
Overview:
The Spiro Lock Washer 257932-4 is a genuine Makita retaining washer used in rotary hammer assemblies to keep critical components securely in place under vibration and impact. Made from hardened spring steel with a corrosion‐resistant dark finish, it maintains clamping force and resists fatigue during heavy use. It is designed for Makita rotary hammers such as the HR2300 and HR2600, where dependable retention is essential for consistent performance and reduced downtime. As a direct replacement part, it restores correct fit and function when the original washer is worn or damaged. Manufacturer Part Number (MPN): 257932-4. Genuine Makita part for assured compatibility and service life across a wide range of LXT and mains-powered rotary hammer models.
Key Features:
- Genuine Makita part for accurate fit and reliable performance (MPN 257932-4).
- Spring‐steel construction resists deformation and fatigue under hammering loads.
- Corrosion‐resistant finish for longer service life in site and workshop conditions.
- Maintains secure retention to help prevent loosening during high vibration.
- Helps protect adjacent parts by keeping assemblies correctly preloaded.
- Straightforward to fit during routine maintenance or component replacement.
- Direct replacement for a worn or lost lock washer to restore original function.
- Suitable for professional and DIY use on compatible Makita rotary hammers.
Typical Applications:
Used to secure rotating or percussive components within the hammer mechanism, such as gearbox, spindle, or bearing locations. Ideal for maintenance, overhaul, and repair of compatible Makita rotary hammers where fasteners must stay tight under repeated impact. Supports reliable operation on site, in workshops, and for general construction, renovation, and drilling tasks in masonry and concrete.
Also known as:
Locking washer, spiro washer, spiral lock washer, retaining washer, spring washer, spiral retaining ring, lock ring.
Fits Models:
BHR242, BHR243, DHR242RFE, DHR242RFEV, DHR242RMJ, DHR242RMJV, DHR242Z, DHR243RFE, DHR243RFEV, DHR243RMJ, DHR243RMJV, DHR243Z, DHR280ZJ, DHR281ZJ, HR2300, HR2600, HR2601, HR2610, HR2611F, HR2611FT, M8701
Alternate Part Numbers:
2579324
Product Specifications
| L&S Part No. | 257932-4 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Makita |
| OEM No. | 257932-4 |
| Unit of Sale | 1 |
| Applications | BHR242, BHR243, DHR242RFE, DHR242RFEV, DHR242RMJ, DHR242RMJV, DHR242Z, DHR243RFE, DHR243RFEV, DHR243RMJ, DHR243RMJV, DHR243Z, DHR280ZJ, DHR281ZJ, HR2300, HR2600, HR2601, HR2610, HR2611F, HR2611FT, M8701 |
| Machine Type | Rotary Hammer |
| Fits Brands | Makita |
| Fits Models | BHR242 | BHR243 | HR2300 | HR2600 | HR2601 | HR2610 | HR2611F | HR2611FT | DHR242RFE | DHR242RFEV | DHR242RMJ | DHR242RMJV | DHR242Z | DHR243RFE | DHR243RFEV | DHR243RMJ | DHR243RMJV | DHR243Z | DHR280ZJ | DHR281ZJ | M8701 |
