MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for rugged applications with an operating temperature range of -65°C to 200°C. Available in various configurations such as front wall mount, rear wall mount, and jam nut receptacles, they ensure reliable connectivity in harsh environments. These connectors comply with military specification MIL-DTL-38999 I, offering versatility with 9 shell sizes and 52 insert arrangements. Utilizing M39029 rear release crimp contacts, they guarantee secure connections with sizes 22D, 22M, 22, 20, 16, and 8, including coax and twinax options. Constructed with high-strength aluminum shells and offered in different plating options like gold, electroless nickel, and cadmium-free finishes, they provide corrosion resistance and durability. With features like bayonet coupling and RoHS compliance, these connectors are ideal for demanding applications that require rugged and reliable performance.