MIL-DTL-38999 Series I connectors are designed for harsh environments, offering up to 128 contacts in an environmentally sealed insert. With an operating temperature range from -65 °C to 200 °C, they provide reliable performance in extreme conditions. Available in various shell sizes and insert arrangements, these connectors feature front and rear wall mount as well as jam nut receptacles, accommodating different installation requirements. Utilizing M39029 rear release crimp contacts, they ensure secure connections. The high strength aluminum shells come with a range of plating options, including cadmium-free finishes for RoHS compliance. Perfect for military and industrial applications, these connectors guarantee durability and conductivity, with a mating life of 500 cycles.