MIL-DTL-38999 Series I connectors are rugged and reliable, featuring up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, they offer a wide operating temperature range from -65 °C to 200 °C. Available in various configurations including front and rear wall mount, as well as jam nut receptacles, these connectors ensure secure connections. Utilizing M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8 (coax and twinax), they provide versatility in applications. With options for plating such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, they cater to diverse needs. The high strength aluminum shells and RoHS-certified finishes guarantee durability and compliance. An essential part of the 38999 Series I, these connectors are ideal for military, aerospace, and industrial applications requiring reliable electrical connections in challenging environments.