These little guys are a common piece for replacement, as they're liable to roll under a rug never to be seen again. With a few extra Steam Valve Securing Nut's on hand, you can spare yourself a classic "Aw, nuts!" moment. This nut works to secure the steam valve to the body of the machine on Rocket Appartmento, Giotto, Mozzafiato & V2/V3 Cellini.

Part number: A329905087.