The MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65°C to 200°C. Offering front and rear wall mount options, as well as jam nut receptacles, this connector family ensures secure and reliable connections. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for various applications. Constructed with high strength aluminum shells, they come in a range of plating options including cadmium finishes and RoHS certified alternatives. With a focus on durability and performance, these connectors are ideal for military and aerospace applications.