MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert. These connectors are environmentally sealed, with an operating temperature ranging from -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for reliable connectivity. The high strength aluminum shells come with plating options including electroless nickel and cadmium finishes. With front wall mount, rear wall mount, and jam nut receptacles, they offer versatility in installation. These connectors meet military specification MIL-DTL-38999 I and are ideal for applications requiring durable and secure electrical connections.