M12 D-Coded Plug, 4-Position, Solder Cup Termination
The T4133512041-000: The D-coding aligns the keyway to prevent mis-mating with A-, B-, or C-coded counterparts, which is the first check when matching this plug to a panel-mount receptacle or cordset. The solder cup termination accepts prepared wire ends directly — no crimp tool needed, which simplifies field termination but requires careful soldering to avoid wicking up the strands. The bulkhead mounting feature with rear-side nut allows panel installation from the inside, keeping the threaded mating face accessible from the outside.