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. Offering front wall mount, rear wall mount, and jam nut receptacles, they ensure secure connections. These connectors, complying with military specification MIL-DTL-38999 I, utilize M39029 rear release crimp contacts in various sizes, including coax and twinax. Constructed with high-strength aluminum shells, they come in multiple plating options such as cadmium and nickel, with RoHS-certified finishes available. Perfect for demanding applications, these connectors guarantee reliability with their conductivity, environmental resistance, and 500 mating cycles durability.