MIL-DTL-38999 Series I connectors, designed for harsh environments, feature up to 128 contacts in an insert with front wall mount, rear wall mount, and jam nut receptacles. Operating within a wide temperature range from -65 °C to 200 °C, these connectors ensure reliable performance in demanding conditions. Compliant with military specification MIL-DTL-38999 I, they offer versatility with 9 shell sizes and 52 insert arrangements, accommodating various applications. Constructed from high-strength aluminum, they come with different plating options, including cadmium-free finishes for RoHS compliance. With M39029 rear release crimp contacts, they guarantee secure connections. Suitable for use in environments requiring environmental resistance, these connectors are essential for critical military and industrial applications.