MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65°C to 200°C. Available in front wall mount, rear wall mount, and jam nut receptacles, they offer RFI grounding plugs and utilize M39029 rear release crimp contacts. With 9 shell sizes and 52 insert arrangements, these connectors come in high-strength aluminum shells with various plating options, including RoHS-certified finishes. The connectors, compliant with military specification MIL-DTL-38999 I, are ideal for applications requiring reliable and durable electrical connections.