The MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With front wall mount, rear wall mount, and jam nut receptacles, they offer versatility in installation. Operating between -65 °C and 200 °C, these connectors are environmentally sealed for reliable performance. Utilizing M39029 rear release crimp contacts, they ensure secure connections in sizes 22D, 22M, 22, 20, 16, and 8. Encased in high-strength aluminum shells with various plating options, including cadmium-free finishes, they meet diverse application needs. RoHS compliant and with a mating life of 500 cycles, these connectors are ideal for demanding military and industrial applications.