MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65°C to 200°C, they offer reliability in extreme conditions. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. These connectors come in high-strength aluminum shells with options for plating, including cadmium-free finishes. Ideal for military and aerospace applications, they ensure durability and performance in demanding settings.