MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, designed for harsh environments with operating temperatures ranging from -65 °C to 200 °C. Available in various configurations including front wall mount, rear wall mount, and jam nut receptacles, they offer RFI grounding plugs and utilize M39029 rear release crimp contacts. With a selection of 9 shell sizes and 52 insert arrangements, these connectors are housed in high-strength aluminum shells with plating options such as cadmium-free finishes. Meeting MIL-DTL-38999 I military specifications, they ensure reliable performance with gold-plated contacts, bayonet coupling, and environmental resistance. Suitable for box mounting applications, these connectors are ideal for use in demanding environments requiring secure and durable electrical connections.