MIL-DTL-38999 Series I connectors feature up to 128 contacts in an 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 use 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 cadmium-free finishes. Meeting military specification MIL-DTL-38999 I, they ensure reliable electrical connections in demanding applications.