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 of -65 °C to 200 °C, they offer reliable performance in extreme conditions. Available in various shell sizes and insert arrangements, these connectors come in high-strength aluminum shells with a choice of plating options, including RoHS-certified finishes. The connector family includes front wall mount, rear wall mount, and jam nut receptacles, all featuring RFI grounding plugs. Utilizing M39029 rear release crimp contacts, they ensure secure connections in military and aerospace applications. Suitable for both wall and jam nut mounting, these connectors are durable and reliable, meeting stringent military specifications for environmental resistance.