MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert with a wide operating temperature range of -65 °C to 200 °C. Available in various configurations including front wall mount, rear wall mount, and jam nut receptacles, they offer versatility for different applications. These connectors, compliant with military specification MIL-DTL-38999 I, are constructed with high-strength aluminum shells and offer multiple plating options such as gold, electroless nickel, and cadmium-free finishes. With M39029 rear release crimp contacts, they ensure reliable connectivity in demanding conditions. Suitable for back panel wall mounting, they are ideal for aerospace, defense, and industrial use, providing rugged performance with 500 mating cycles durability.