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, these connectors offer reliable performance in extreme conditions. Available in various mounting styles, including front and rear wall mount as well as jam nut receptacles, they ensure versatile installation options. The connectors utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8, catering to diverse connectivity needs. Crafted from high-strength aluminum, they come in different plating options such as electroless nickel and cadmium finishes. RoHS compliant choices are also available. Suitable for military and industrial applications, these connectors guarantee durability and conductivity with a service rating of M and a mating life of 500 cycles. The MIL-DTL-38999 Series I connectors are ideal for demanding environments where rugged performance is essential.