MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. These environmentally sealed connectors offer a wide operating temperature range from -65 °C to 200 °C. Available in various mounting styles including front and rear wall mount, jam nut, and box mount receptacles, they provide versatility for different applications. With 52 insert arrangements and M39029 rear release crimp contacts, these connectors ensure reliable connectivity. Constructed with aluminum shells and offering multiple plating options, they meet stringent military specifications for durability. Suitable for aerospace, defense, and industrial applications, these connectors guarantee high performance in challenging conditions.