MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, offering robust environmental sealing and a wide operating temperature range from -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they come in high-strength aluminum shells with options for plating, including cadmium-free finishes. These connectors, compliant with military specification MIL-DTL-38999 I, are designed for harsh environments, with options for front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs. Utilizing M39029 rear release crimp contacts, they ensure reliable connections in demanding applications.