Genuine DeWalt replacement ring (part N849839) — a small stamped snap/retaining ring sold individually to secure internal assemblies in DeWalt impact drivers and compact impact wrenches.

This thin, spring-steel style circlip fits into a shaft groove to hold anvil/gear or spindle components in place; it’s the simple but critical clip that prevents parts from walking out during operation.

Common fit examples include the DCF887 family (many Type‑1 and D2 variants) and DCF801 series models such as the DCF801B / DCF801D2K — check your model’s exploded parts list for exact type fitment.

Sold as a single genuine DeWalt part, N849839 is a low-cost, direct-fit replacement that gets your tool back to reliable service; keep a pair of snap‑ring pliers handy for safe reinstallation.

Note: this is a specific DeWalt part commonly listed under replacement rings on parts sites — if you need additional confirmation, compare the part number with your power tool parts diagram.