DeWalt 650109-00 Inner Clamp Washer – Genuine OEM Replacement Circular Saw Blade Clamp Washer
Part Number: 650109-00
Category: Power Tool Parts & Accessories → Circular Saw Parts → Blade Clamp Washers
Type: DeWalt 650109-00 Inner Clamp Washer – Genuine OEM Replacement Circular Saw Blade Clamp Washer
The DeWalt 650109-00 Inner Clamp Washer is a genuine OEM replacement blade mounting component designed for compatible DeWalt circular saws. This precision-machined steel washer fits on the arbor behind the saw blade, providing a stable mounting surface and evenly distributing clamping force to securely hold the blade in place during operation. Manufactured to original equipment specifications, it provides a direct-fit replacement for worn, damaged, or missing inner clamp washers, helping restore safe and accurate blade installation.
Key Features & Benefits
- Part Number: 650109-00
- Genuine OEM DeWalt replacement part
- Replacement inner blade clamp washer for circular saws
- Provides secure blade support on the arbor
- Helps maintain proper blade alignment
- Evenly distributes clamping force
- Precision-machined steel construction
- Direct-fit OEM replacement
- Manufactured to original equipment specifications
Technical Specifications
Part Number: 650109-00
Manufacturer: DeWalt
Product Type: Inner Clamp Washer
Material: Hardened Steel
Application: Circular Saw Blade Arbor Assembly
OEM Part: Yes
Quantity: Sold Individually
Compatible Applications
The DeWalt 650109-00 Inner Clamp Washer fits numerous compatible circular saws, including:
DeWalt
- DCS391
- DCS391B
- DCS393
- DCS565
- DCS565B
- DCS566
- DCS566B
Always verify your tool model, type number, and original part number before ordering to ensure proper compatibility.
Function of the Inner Clamp Washer
The 650109-00 Inner Clamp Washer is designed to:
- Support the saw blade on the arbor
- Maintain proper blade positioning and alignment
- Distribute clamping force evenly across the blade
- Help reduce blade wobble and vibration
- Ensure secure blade retention during cutting
- Restore the circular saw's original blade mounting system
Using a genuine OEM replacement inner clamp washer helps maintain safe operation and accurate cutting performance.
Common Signs Replacement Is Needed
Replace the inner clamp washer if you notice:
- Missing washer during blade replacement
- Bent or warped washer
- Excessive wear on the blade contact surface
- Corrosion or rust affecting the seating surface
- Blade wobble despite proper installation
- Damage caused by improper blade installation
A damaged or missing inner clamp washer can prevent the blade from seating correctly, resulting in vibration, inaccurate cuts, and unsafe operation.
Installation & Service Notes
Disconnect the circular saw from the power source or remove the battery before servicing.
Lock the arbor and remove the blade bolt and outer clamp washer. Carefully remove the saw blade and inspect the 650109-00 Inner Clamp Washer for wear or damage. Position the replacement washer on the arbor in the same orientation as the original, ensuring it sits flush against the arbor shoulder. Reinstall the blade, outer clamp washer, and blade bolt, then tighten the blade bolt to the manufacturer's specified torque. Verify that the blade rotates freely before returning the saw to service.
Important: Always verify your saw model and original part number before ordering. Inspect the blade bolt, outer clamp washer, and arbor whenever replacing the inner clamp washer. Replace worn blade mounting components together to maintain proper blade retention and safe operation.
Maintenance Recommendations
- Inspect the inner clamp washer during every blade change.
- Keep the washer and arbor surfaces clean and free of sawdust or resin.
- Replace bent, worn, or corroded washers immediately.
- Verify the blade bolt is tightened to the manufacturer's specifications.
- Inspect both the inner and outer clamp washers for wear before installing a new blade.
- Use genuine OEM replacement parts to maintain factory fit, secure blade retention, and long-term circular saw performance.
