MIL-DTL-38999 Series I connectors are designed for harsh environments, offering up to 128 contacts in an insert. With an operating temperature range of -65 °C to 200 °C, these connectors are sealed for environmental protection. Available in various shell sizes and insert arrangements, they feature front and rear wall mount receptacles, as well as jam nut receptacles. Utilizing M39029 rear release crimp contacts, they ensure secure connections in sizes 22D, 22M, 22, 20, 16, and 8 (coax and twinax). Constructed with high-strength aluminum shells, they come with plating options such as cadmium finishes and RoHS-certified alternatives. Ideal for military and industrial applications, these connectors provide reliable performance in demanding conditions.