MIL-DTL-38999 Series I connectors are engineered for rugged environments, boasting up to 128 contacts in a sealed insert. With an impressive operating range of -65 °C to 200 °C, these connectors offer reliability in extreme conditions. Available in various shell sizes and insert arrangements, they feature M39029 rear release crimp contacts for secure connections. The high-strength aluminum shells come in a range of plating options, including cadmium-free finishes for environmental compliance. Whether in aerospace, military, or industrial applications, these connectors deliver dependable performance with bayonet coupling and wall mount configurations.