MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65 °C to 200 °C, these connectors offer reliable performance in extreme conditions. Available in various shell sizes and insert arrangements, they accommodate M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8. The connectors come in high-strength aluminum shells with options for plating, including cadmium finishes and RoHS-certified alternatives. Suitable for military and industrial applications, they provide secure and durable electrical connections.