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 wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs. Utilizing M39029 rear release crimp contacts, these connectors ensure secure connections in aerospace and military applications. Crafted from high-strength aluminum, they come in different plating options, including cadmium-free finishes, meeting RoHS certification. Ideal for box mounting with bayonet coupling, these connectors guarantee reliable performance in demanding environments.