Makita CUP EM404MP/198768-1 - 457290-0

Genuine Makita part 457290-0 — "cup" for blade fastening on Makita brush‑cutter attachments. It’s the resin/centering cup that sits between the blade and the fastening nut to secure and center a metal cutting blade on the attachment.

Key details: designed for the EM404MP couple‑shaft brush‑cutter attachments; blade cup diameter listed as 68 mm and the spindle thread for the blade nut is M10 × 1.25 (left‑hand). It installs together with the clamp washer and blade nut (clamp washer 347105‑8 / nut 252236‑9 as shown in the parts breakdown).

Notes on compatibility: the cup is shown in Makita parts diagrams for EM404 instruction material as the part used when fitting a metal blade. Some parts listings show part 457274‑8 as a replacement/superseding cup for 457290‑0. — check your model and year when fitting.

Perfect if you need the genuine Makita cup to restore proper blade seating and safe operation of EM404MP attachment — sold as the single replacement cup specified for those models.