Yes, you can use M80-0190005 contacts with this connector – our large bore (M80-0110005), small bore (M80-0130005) and extra small bore (M80-0190005) crimps are all interchangeable in the Datamate signal housings. If you want to purchase M80-4611042 with M80-0190005 already supplied in the kit, this is part number M80-4E11042F1. You can also purchase the housings without any contacts as part number M80-4131098, and purchase the M80-0190005 contacts separately.

We have a support article relating to this question, but essentially the hole you see is not designed to be an inspection hole. It is a plating hole, to allow the finish materials to reach the bottom of the crimp bore and help ensure performance. As such it is not relevant to IPC-A-620. Applying a crimp using the correct tools will indeed overlap the plating hole by 25 to 50%, but this is intended and expected. The design of the Datamate connector is so compact, there is no room to move the crimp area away from this hole without making the whole connector design larger.