Thread size on Crosman/Benjamin HP Hand Pump?

I need to make the Crosman hand pump slightly more compact for storage in a hard case. Easiest way to do that looks like installing a 90 degree elbow between the base and the flexible hose.

The crimped hose fitting they use is about two inches long, turning it to the side would give me the clearance I need.

It appears to be metric?

Before I go down this path of trying to determine that thread size, anyone already did this?