Mil-DTL-38999 Series I connectors are designed for demanding environments, offering up to 128 contacts in an environmentally sealed insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors are ideal for extreme conditions. Available in various shell sizes and insert arrangements, they feature front and rear wall mount options, as well as jam nut receptacles. Utilizing M39029 rear release crimp contacts, they ensure secure connections. The high-strength aluminum shells come in different plating options, including cadmium-free finishes, catering to diverse needs. These connectors, compliant with military specifications, guarantee reliability with their durable construction and conductivity, making them suitable for critical applications requiring robust performance.