Single and double gang versions for 45 amp connectors that are more or less standard in ham radio.

If your power poles won't fit, it's probably because the print shrank slightly as it cooled off. Try scaling the model up slightly to compensate before you complain that it doesn't work. 101% worked for me when it happened.

The nut will fit all three versions.

Recommend you print these at 100% infill with concentric layers using ASA or other high temperature plastic. Do not overtighten the nut, it can and will pull the socket through the hole and shear the face off. If the nut keeps vibrating loose for you, put a small amount of silicone sealant in the threads.