The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With environmental sealing and an operating temperature range from -65°C to 200°C, these connectors ensure reliability in extreme conditions. Available in various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility for different applications. Built to MIL-DTL-38999 II military specification, these connectors are known for their durability and performance. The contacts, utilizing M39029 rear release crimp technology, come in sizes 22D, 22M, 22, 20, 16, and 12, providing flexibility in design. Constructed with aluminum shells and offered with various plating options, including RoHS compliant finishes, they meet stringent quality standards. Suitable for applications requiring high reliability and ruggedness, the MIL-DTL-38999 Series II connectors are ideal for aerospace, defense, and industrial use.