MIL-DTL-38999 Series I connectors feature up to 128 contacts in a sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in front and rear wall mount, as well as jam nut receptacles, they offer RFI grounding plugs and M39029 rear release crimp contacts. With 52 insert arrangements and various plating options, including RoHS certified finishes, these connectors ensure reliable performance in demanding applications. Made from high-strength aluminum shells, they guarantee durability and conductivity with a mating life of 500 cycles. Suitable for military and industrial use, these connectors meet stringent quality standards for environmental resistance and performance.