MIL-DTL-38999 Series I connectors feature up to 128 contacts within an environmentally sealed 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 for different applications. These connectors come in high-strength aluminum shells with options for plating, including cadmium-free finishes, ensuring durability and reliability. The connector types include front wall mount, rear wall mount, and jam nut receptacles, with RFI grounding plugs. Utilizing M39029 rear release crimp contacts, they provide secure connections, suitable for military and aerospace use. With their bayonet coupling and box mounting flange, they offer ease of installation and maintenance. Meeting MIL-DTL-38999 I specifications, these connectors are essential for demanding environments where performance and ruggedness are paramount.