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 come in various mounting options, including front wall mount, rear wall mount, and jam nut receptacles. Compliant with military specification MIL-DTL-38999 I, they offer reliable connectivity with M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8 (coax and twinax). Available in 9 shell sizes and 52 insert arrangements, these connectors have high strength aluminum shells with plating options such as electroless nickel and cadmium finishes. RoHS certified options are also available. Perfect for demanding applications, these connectors ensure durability and performance in challenging conditions.