MIL-DTL-38999 Series I connectors offer high-performance connectivity for harsh environments. With up to 128 contacts in an insert, these connectors are ruggedly built and environmentally sealed, ensuring reliable operation in extreme conditions. Featuring various mounting options including front and rear wall mount as well as jam nut receptacles, they provide versatility for different applications. The connectors comply with military specification MIL-DTL-38999 I and are available in 9 shell sizes and 52 insert arrangements. Utilizing M39029 rear release crimp contacts, they guarantee secure connections. Constructed from high-strength aluminum with plating options such as electroless nickel and cadmium finishes, they offer durability and corrosion resistance. Suitable for temperatures ranging from -65 °C to 200 °C, these connectors are ideal for demanding military and industrial environments.