MIL-DTL-38999 Series I connectors feature up to 128 contacts in an 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 front and rear wall mount options, as well as jam nut receptacles and RFI grounding plugs. These connectors utilize M39029 rear release crimp contacts and come in high strength aluminum shells with multiple plating options. Meeting military specification MIL-DTL-38999 I, they ensure reliable performance with gold-plated contacts and a bayonet coupling. Suitable for box mounting applications, they provide a secure and durable electrical connection in demanding environments.