MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, offering environmental sealing and an operating temperature range of -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts, including coax and twinax options. These connectors come in high-strength aluminum shells with plating choices like cadmium-free finishes. With options for front and rear wall mount, as well as jam nut receptacles, they are designed for harsh environments, meeting military specification MIL-DTL-38999 I. This connector family is ideal for applications requiring rugged and reliable electrical connections in demanding conditions.