The MIL-DTL-38999 Series I connectors feature up to 128 contacts housed in an insert, designed for harsh environments with a wide operating temperature range of -65 °C to 200 °C. Available in various configurations including front and rear wall mount receptacles and jam nut plugs, they offer reliable connectivity in demanding settings. Utilizing M39029 rear release crimp contacts, these connectors come in aluminum shells with multiple plating options such as cadmium and electroless nickel. Meeting military specification MIL-DTL-38999 I, they ensure durability and performance in rugged applications, making them ideal for aerospace, defense, and industrial use.