MIL-DTL-38999 Series I connectors feature up to 128 contacts in 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 in applications. These connectors come in high-strength aluminum shells with plating options including cadmium-free finishes, ensuring durability and reliability. The family includes front and rear wall mount, jam nut receptacles, and RFI grounding plugs, all meeting military specification MIL-DTL-38999 I. With M39029 rear release crimp contacts, they provide secure connections, making them ideal for military and aerospace applications.