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 various shell sizes and insert arrangements, they offer versatility with M39029 rear release crimp contacts. These connectors come in high-strength aluminum shells with options for plating, including cadmium-free finishes. With front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, they ensure reliable connectivity in demanding applications. Designed to MIL-DTL-38999 I military specification standards, these connectors are ideal for use in aerospace, defense, and other rugged environments.