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 mount types including front wall, rear wall, and jam nut receptacles, they offer RFI grounding and utilize M39029 rear release crimp contacts. With options for plating such as cadmium-free finishes, they come in high-strength aluminum shells. This connector family, compliant with MIL-DTL-38999 I specifications, combines durability with versatility, making it ideal for military and industrial applications.