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 with RFI grounding plugs. With 52 insert arrangements and M39029 rear release crimp contacts, they ensure secure connections in various applications. The connectors, housed in durable aluminum shells, come in multiple plating options, including cadmium-free finishes, meeting RoHS compliance. Operating within a wide temperature range of -65 °C to 200 °C, they guarantee reliable performance in extreme conditions. Ideal for military and industrial use, these connectors provide conductive and environment-resistant solutions for critical connectivity needs.