MIL-DTL-38999 Series I connectors feature up to 128 environmentally sealed contacts in an insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various shell sizes and insert arrangements, these connectors offer front and rear wall mount options, as well as jam nut receptacles and RFI grounding plugs. 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 light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, with select RoHS certified finishes. Ideal for military and industrial applications, these connectors, meeting MIL-DTL-38999 I specifications, are reliable for demanding environments, offering durability and performance.