MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range from -65 °C to 200 °C, these connectors are ideal for demanding applications. Available in various shell sizes and insert arrangements, they offer versatility in design. The connectors come in high-strength aluminum shells with multiple plating options, including cadmium-free finishes for RoHS compliance. Offering front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, they ensure secure and reliable connections. Utilizing M39029 rear release crimp contacts, these connectors guarantee efficient performance. Suitable for military and industrial use, MIL-DTL-38999 Series I connectors are built to withstand rugged conditions while maintaining conductivity and environmental resistance.