MIL-DTL-38999 Series I connectors feature up to 128 contacts within an environmentally sealed insert, designed for rugged applications with an operating temperature range from -65 °C to 200 °C. Available in various shell sizes and insert arrangements, these connectors offer versatility in mounting options including front wall, rear wall, and jam nut receptacles. Utilizing M39029 rear release crimp contacts, they ensure secure connections in sizes 22D, 22M, 22, 20, 16, and 8, including coax and twinax variants. Constructed with high-strength aluminum shells, they come with a range of plating options such as cadmium finishes and electroless nickel, catering to different environmental requirements. These connectors, compliant with MIL-DTL-38999 I specifications, are ideal for demanding industrial and military applications.