154172-0020-MS is a microminiature connector from ITT Cannon's MDM (Micro-D Metal Shell) series featuring .050" contact spacing. The connector is designed with a metal shell construction and supports various mounting hardware options including jackpost, jackscrew, and float mount configurations. It features military specification hardware compatibility with torque values of 4.0 in-lbs for sizes 9-51 and 6.0 in-lbs for size 100. The MDM series offers versatility with coaxial, power, and signal contact options, making it suitable for aerospace, defense, industrial, transportation, and medical applications where reliable harsh environment interconnect solutions are required.