Genuine DeWalt retaining snap ring — part number 323762-07 — a hardened steel circlip designed to lock shafts and internal assemblies in place on DeWalt rotary hammers and SDS chuck housings.

This is the 22.5 mm snap ring (nominal 22.5) commonly used where a compact, high‑tensile retaining ring is required; it’s the small part that keeps assemblies indexed and running smoothly, so it’s handy to have among your power tool parts when servicing a hammer.

Examples of models this ring is used on (as listed in DeWalt parts diagrams and exploded views) include DC212K/DC212KL, DC213/DC213KL, DC232K, DC222K/DC224K/DC234K, DCH273/DCH274/DCH364 and several  D25011K  / D25012K / D25013K  series cordless rotary hammers — listed here as representative models that accept part 323762-07.

Quick to install with standard snap‑ring pliers, the original DeWalt 323762-07 is a direct replacement if the factory circlip on your rotary hammer has worn or sprung out of its groove.