These files form a surface mount solution for xt60h connectors. There is a long bolt, a short bolt (choose one) and a nut. Each comes in various tolerances (see below). They print on my Snapmaker A350 with 0.2mm layer height and no supports. The edges of the nut threading (and bolt to some extent) have been chamfered to help the nut to work right off the print bed without any post processing. (Even on my calibration that squishes the first layer making it spread too wide I can pop these off and screw them onto the bolts with no trouble.)

Female side should be connected to wire and glued into socket (if using socket
side as a power source). Male side also fits if going on a device to be powered.

There is a bit of play around the connector to make plugging and unplugging
easier, given the XT60 need to be glued in anyway.

Threading is M25-2. Hole size to accomodate should be 1". No washers required.

The various versions, v1, v2, v3 have different tolerance modifications to the
threads to allow for 3d printing inaccuracies.

v1 is the sloppiest, with .2mm offset added to the thread faces (nut only)
v2 is the middle, with 0.15mm offset added to the thread faces
v3 is the best tolerance/least wobbly, but might have difficulty screwing on
with only 0.1mm offset added.

All have some filet added to round off some sharp edges on the threads. This seems to be the key to making them work straight off the printer. Prior to that, even with the offsets they wouldn't screw by hand.