MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in an insert, ideal for harsh environments. Featuring front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, they ensure secure connections. With a wide operating temperature range from -65 °C to 200 °C, these connectors are versatile. Available in 9 shell sizes and 52 insert arrangements, they accommodate various applications. Constructed with high-strength aluminum shells and offering multiple plating options, including RoHS-certified finishes, they guarantee durability and reliability. Suitable for military and industrial use, these connectors, with M39029 rear release crimp contacts, provide efficient and robust electrical connections.