MIL-DTL-38999 Series I connectors offer exceptional performance in harsh environments with up to 128 contacts, featuring front and rear wall mount options, as well as jam nut receptacles. These connectors, compliant with military specification MIL-DTL-38999 I, boast a wide operating temperature range from -65 °C to 200 °C, ensuring reliability in extreme conditions. With 52 insert arrangements and M39029 rear release crimp contacts, they provide versatility for various applications. Constructed with high-strength aluminum shells and available in multiple plating options, including RoHS-certified finishes, these connectors guarantee durability and longevity. Perfect for demanding environments, they are designed for 500 mating cycles and offer excellent conductivity. The Series I connectors are ideal for critical military and aerospace systems, where rugged performance is essential.