NT6142 Nuffield Belt Pulley Tab Washer.  Secures the nut that holds on the main drive gear.

See part numbered 6 in the illustration.

Fitted to tractors:

  • Nuffield Universals M3, M4, MV3, PM4, DM4
  • Nuffield Universal Three (3DL), Nuffield Universal Four (4DM)
  • Nuffield 342, 460