Husqvarna 246 clutch

[BigDee]

Can any other clutches fit a Husqv 246? This one has an unmarked clutch threaded onto the shaft, with a Jonsered 4523007 drum (Jred 520?) that fits the clutch and the chain brake, but the bore seems to belong on a larger shaft than the 246. It came without the bearing.

 

[BigDee]

The 246 shaft and the Jred clutch measure 11.19mm OD and 16mm ID, respectively.

Can someone tell me the shaft diameter of a Jonsered 520?