DeWalt 584686-00 — genuine DeWalt ball plunger (detent). This compact spring-loaded plunger (ball-type detent) is the small hardware piece that locates and holds a moving component in the tool’s mechanism.

Precisely the part used in a number of DeWalt jigsaw and related tool assemblies; examples of models that use 584686-00 include DCS335B, DC318KL, DC308K and DW331K‑B1.

What you’re getting: the original DeWalt-numbered plunger (584686-00) ready to drop into the detent location—no machining required. It’s intended to replace the worn or missing ball/detent assembly so the mechanism regains firm, positive engagement and correct positioning.

If your tool’s parts diagram shows 584686-00 or a “plunger/ball plunger/detent” in the same spot, this is the matching genuine DeWalt piece you’ll want for the repair.