MIL-DTL-38999 Series I connectors feature up to 128 contacts housed in an insert, designed for harsh environmental conditions with an operating range of -65 °C to 200 °C. Available in various shell sizes and insert arrangements, these connectors offer versatility in applications. Constructed with high-strength aluminum shells and offering multiple plating options, including RoHS-certified finishes, they ensure durability and reliability. With options for front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, they provide flexibility in installation. Utilizing M39029 rear release crimp contacts, these connectors guarantee secure and efficient connections. Ideal for military and industrial use, they are engineered for longevity, with a contact mating life of 500 cycles and conductivity in demanding environments. The jam nut mounting receptacles are specifically designed for easy installation and maintenance. With gold contact plating and electroless nickel finish coating, these connectors offer excellent performance in a wide range of applications requiring rugged and reliable connectivity.