Genuine DeWalt replacement block — part number 641424-00. A direct-fit replacement block used in the DW717 of 10" (254 mm) mitre saws, including DW717 and DW717XPS (Type 1–5 listed in parts diagrams).

What it is and what it does:

- Identified in DeWalt parts diagrams simply as "Block" (641424-00) and positioned in the tool’s locking/bevel assembly; it works alongside the bevel/lock rod and lock nut in the parts layout.

- Sold as a single replacement component intended to restore the bevel-lock/locator function when the original block is cracked, worn, or missing.

Why this part matters:

- Replaces the original DeWalt block for a precise, no-modification fit so the bevel/angle locking and pointer assemblies operate correctly again.

Quick installation note:

- The block is a simple mechanical replacement in the saw’s assembly; typical service diagrams show the block installed near the rod and spring elements and secured with the factory fasteners (refer to your model’s parts diagram for screw locations and reassembly order).

Fits (example models): DeWalt DW717, DeWalt DW717XPS (multiple Type/variant listings).

If you need a straightforward, genuine DeWalt replacement to get your DW717-series mitre saw back to correct bevel/lock operation, this is the exact DeWalt part number to match your parts diagram.