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, 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 connector types include front wall mount, rear wall mount, and jam nut receptacles, all supporting RFI grounding plugs. Utilizing M39029 rear release crimp contacts, they ensure secure connections with sizes ranging from 22D to 8. Meeting military specification MIL-DTL-38999 I, these connectors are ideal for applications requiring durability and conductivity.