The Welger 0320490000 is a genuine M10 knurled nut designed for secure fastening in Welger agricultural machinery. This essential component ensures reliable operation across a wide range of Welger balers, including AP41, AP42, AP45, AP50, AP51, AP52, AP61, AP63, AP71, AP73, and RP series models like RP12, RP15, RP100, RP150, RP200, RP200S, RP220, RP235, RP245, RP300, RP320, RP400, RP435, RP500, RP520. Manufactured to OEM specifications, it provides a precise fit and durable performance with an outer diameter of 25 mm and a height of 15 mm.