MIL-DTL-38999 Series I connectors are ideal 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 options for plating, including cadmium-free finishes. The family includes front and rear wall mount, as well as jam nut receptacles, and RFI grounding plugs. Utilizing M39029 rear release crimp contacts, they ensure secure connections. These connectors, meeting military specification MIL-DTL-38999 I, are designed for durability and conductivity, making them essential for critical applications.