MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65°C to 200°C. Offering front wall mount, rear wall mount, and jam nut receptacles with RFI grounding plugs, this connector family comes in 9 shell sizes and 52 insert arrangements. Utilizing M39029 rear release crimp contacts in various sizes, including coax and twinax, they ensure reliable connectivity. Constructed with high-strength aluminum shells, these connectors are available in different plating options, such as cadmium-free finishes, for diverse applications. RoHS certified, they guarantee compliance with environmental standards. Ideal for military and industrial use, these connectors provide a secure and durable solution for electrical connections in demanding settings.