Yes, but the thread wasn't the problem. It replaced the original clutch nut but was over-length and clashed with the diaphragm spring centre.
Found on the old RGM website and in an old paper copy.
"040373M, CLUTCH LOCATION NUT, FITTED WITH SMALL GARTER SEAL FOR CLUTCH PUSHROD, C, "
"C" = Commando.
Edit:
All Commando mainshafts and clutch centre nuts are the same parts and the Commando clutch doesn't fit the Dominator/Atlas mainshaft.
Motorcycle parts and spares for Andover Norton motorbikes: Andover Norton manufactures and supplies all Genuine Factory Spare Parts for Norton motorcycles built before 2002.
andover-norton.co.uk
Motorcycle parts and spares for Andover Norton motorbikes: Andover Norton manufactures and supplies all Genuine Factory Spare Parts for Norton motorcycles built before 2002.
andover-norton.co.uk
Motorcycle parts and spares for Andover Norton motorbikes: Andover Norton manufactures and supplies all Genuine Factory Spare Parts for Norton motorcycles built before 2002.
andover-norton.co.uk