MIL-DTL-38999 Series I connectors are rugged and reliable, designed for harsh environments with up to 128 contacts in an insert. These connectors are environmentally sealed, ensuring optimal performance in extreme conditions with an operating temperature ranging from -65 °C to 200 °C. Featuring front wall mount, rear wall mount, and jam nut receptacles, they offer versatility in installation. The connector family includes 9 shell sizes and 52 insert arrangements, accommodating a wide range of applications. Utilizing M39029 rear release crimp contacts, they guarantee secure and efficient connections. Constructed with high-strength aluminum shells, these connectors are available in various plating options, including cadmium-free finishes for RoHS compliance. With gold contact plating and a maximum operating temperature of 150 °C, they ensure superior conductivity and durability. Suitable for military and industrial use, MIL-DTL-38999 Series I connectors are the ideal choice for demanding environments.