Original DeWalt N864740 — a small, flat retaining washer for the nose/anvil area of DeWalt brushless impact drivers. This genuine DeWalt washer serves as a thin spacer/retainer that helps keep the anvil and nose components aligned and prevents axial play in the 6.35 mm (¼ in) hex impact-driver nose.

Fits example models such as DCF840 (and its TYPE/variant suffixes), DCF850 (multiple Type/region variants), and a range of DCF85x/DCF86x/DCF87x impact drivers — the part appears on official exploded parts lists for those models.

If your impact driver’s nose feels loose or the bit retention isn’t seating correctly, replacing this genuine DeWalt washer restores correct spacing and smooth anvil operation. This is a single-purpose replacement washer commonly listed in DeWalt parts diagrams for the DCF84x/DCF85x .