MIL-DTL-38999 Series I connectors are designed for harsh environments, with up to 128 contacts in an insert and environmental sealing for reliable performance. Operating between -65 °C and 200 °C, they offer versatility in extreme conditions. Available in various shell sizes and insert arrangements, these connectors feature front and rear wall mount options, as well as jam nut receptacles and RFI grounding plugs. Utilizing M39029 rear release crimp contacts, they ensure secure connections in sizes 22D, 22M, 22, 20, 16, and 8. Constructed with high-strength aluminum shells and offered in different plating options, including RoHS certified finishes, they meet stringent military specifications for durability and performance. Perfect for demanding applications, these connectors provide reliable electrical connectivity in critical situations.