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 versatility with M39029 rear release crimp contacts. These connectors, with front and rear wall mount options, are environmentally sealed and RFI grounding plugs included. Crafted from high-strength aluminum, they come with plating choices like cadmium, nickel, and anodized finishes. Meeting military specifications, they guarantee reliability with gold-plated contacts and bayonet coupling. Perfect for back panel box mounting, these connectors ensure secure and efficient electrical connections in demanding applications.