The MIL-DTL-38999 Series I connectors offer high performance in harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65 °C to 200 °C, these connectors are suitable for a wide variety of applications. Available in nine shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for reliable connections. The connectors come in high strength aluminum shells with various plating options, including cadmium-free finishes. With front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, they provide versatility in installation. RoHS compliant and offering excellent conductivity, these connectors are a dependable choice for military and industrial use.