MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, offering environmental sealing and a wide operating temperature range of -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they include M39029 rear-release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8, catering to diverse connectivity needs. These connectors, crafted from high-strength aluminum, come with a choice of plating options, including cadmium-free finishes. The series encompasses front and rear wall mount as well as jam nut receptacles and RFI grounding plugs, all designed for durability in harsh environments. With their bayonet coupling and gold contact plating, they ensure reliable performance, making them ideal for military and industrial applications requiring secure and efficient electrical connections.