Original DeWalt washer inner clamp — part number 645000-00 — engineered to sit on the saw spindle and clamp the blade securely against the outer flange, restoring correct blade alignment and safe clamping action.

This is the inner clamp/washer used on a number of DeWalt mitre and sliding mitre saws - examples include DW706 / DW706E, DW716 / DW716EXPS, DW718 / DW718XPS and models in the DHS780 / DWS780 , so it’s a direct replacement where that washer is shown in the exploded parts diagram.

Made to the original DeWalt specification and finished in the same dark/black plating as the factory part, the washer installs between the blade and the blade-clamping screw to provide the correct bearing surface and clamp stack.

If you need a single-piece fix to get your saw back to clean, true cuts, this original DeWalt 645000-00 washer inner clamp is the exact spare you want among DeWalt spare parts — a small part that restores the blade clamp assembly without additional adjustment. It’s the kind of precise replacement commonly sought when ordering parts for power tools.