MIL-DTL-38999 Series I connectors are designed for demanding environments, featuring up to 128 contacts in an insert and offering reliable performance in temperatures ranging from -65 °C to 200 °C. These rugged connectors come in various mounting options, including front wall mount, rear wall mount, and jam nut receptacles, all with RFI grounding plugs. With 9 shell sizes and 52 insert arrangements available, they accommodate M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8. Constructed with high-strength aluminum shells and offered in different plating options such as electroless nickel and cadmium finishes, they ensure durability and efficient conductivity. Meeting MIL-DTL-38999 I military specifications, these connectors provide a secure and efficient solution for electrical connections in harsh environments.