Powerpole Bulkhead Screwtop Fitting

UPDATE NOTE  12/18/2025:   The initially uploaded model had a misplaced retention pin hole.  It could be used, but was not optimally placed with regard to the retension ribs.  The 12/18/2025 upload corrects that issue.  Please note the pin hole now sits at the bottom of the threads, be sure to trim the pin (if used) so as to not interfere with the cap being screwed down.

This model is a panel or bulkhead fitting for an anderson 45A powerpole pair.  It is sized to fit in a 30mm hole in an panel up to 12mm thick.  A cap is provided for protection while not in use.

I printed the Body1 part with the shorter threaded length at the bottom and using supports from the build plate. 

The threads are nominally M30x2.  You need to gradually work them in after printing to smooth them out after trimming any excess material.  The socket for the powerpole pair has ribs to retain the pair.  There is also a provision for pinning the pair in place with a length of 1.75 filament or a 2mm pin.  You will probably need to chase the hole with a 2mm or 2.5mm drill.   

Powerpole pairs may be easier to insert if individual pieces are slightly offset to allow one side to engage the rib before the other.  As the first piece engages the rib it allows a bit more room for the other piece to get by the opposite rib.   If the pair is difficult to snap into place, you can lightly trim the retaining ribs in the socket to ease assembly.  If you trim too much, just use the "pin in place" option.

When installing, you will probably want to use a layer of RTV or silicon sealant to improve waterproofing.

Fustion 360 source and .STEP files are included in addition to the .STL files.