The MIL-DTL-38999 Series II connectors are designed for rugged environments, featuring up to 128 contacts in an insert and a wide operating temperature range of -65 °C to 200 °C. These connectors come in various configurations including front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes with 52 insert arrangements, they use M39029 rear release crimp contacts for reliable connections. The aluminum shells offer durability, with plating options like gold, electroless nickel, and cadmium finishes. Meeting military specifications, these connectors ensure secure and efficient electrical connections in harsh conditions.
