MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various mounting options including front wall, rear wall, and jam nut receptacles, they ensure secure connections. With 9 shell sizes and 52 insert arrangements, these connectors use M39029 rear release crimp contacts for reliable performance. Made of high-strength aluminum, they come in different plating options such as cadmium and nickel. RoHS compliant finishes are also offered, catering to diverse industrial needs. Perfect for military and aerospace applications, these connectors guarantee durability and conductivity, with a female contact gender and socket contact style. With a service rating of I, they are ideal for demanding environments requiring environmental resistance.