A motor plug that is designed to use a standard M20 gland as it's housing and using full size 4mm bullets for phase pins
 

Features:
    - 4mm bullet connector phase pins
    - 1mm pins for signal wiring
    - M20 gland size
    - metal housing

For the 1mm pins use MHDM-STF and MHDM-STM

Design built around this gland: https://www.hilpress.com/en/cable-screw-glands-and-accessories/cable-screw-glands-and-accessories-metric/standard-brass-cable-screw-glands/eco-ip67-with-locknuts/hp-eco-cable-screw-glands-with-suitable-locknut-20-x-1-5.html?force_sid=inos2o06mv0c1i0mgfo9nb3gmk

I recommend only printing this with a resin 3D printer with some resin mix that's tough and heat resistant.