Lemo part numbers seem very complex at first glance but they really aren't. You know the series, that is the most important thing to know. Just have a look at their catalogue, it is very good and well explained. You now only need to figure out what kind of contact insert you need, it's either all female, all male or a mixture of both. Of course, if Fluke used something proprietary then you might be out of luck. Good thing is, Lemo make you any contact insert you want even in qty 1. It'll cost you, though.