MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range from -65 °C to 200 °C, these connectors offer reliable performance in extreme conditions. Available in various shell sizes and insert arrangements, they accommodate M39029 rear release crimp contacts for secure connections. Constructed with high-strength aluminum shells and offered in different plating options, including cadmium-free finishes, these connectors ensure durability and compliance. Suitable for military and industrial applications, the Series I connectors provide reliable connectivity with a mating life of 500 cycles and conductive socket contact style.