MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, these connectors feature front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs. With a wide operating temperature range of -65 °C to 200 °C, they ensure reliability in extreme conditions. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts in various sizes, including coax and twinax. Constructed with durable high-strength aluminum shells, they come in multiple plating options, such as cadmium-free finishes. These RoHS-certified connectors are ideal for military and aerospace applications, providing secure and efficient connectivity.