MIL-DTL-38999 Series I connectors offer robust connectivity with up to 128 contacts in a sealed insert. Ideal for harsh environments, they operate between -65 °C and 200 °C, featuring front and rear wall mount options, as well as jam nut receptacles. With 52 insert arrangements and M39029 rear release crimp contacts, these connectors ensure reliable performance. Constructed with high-strength aluminum shells and various plating choices, including cadmium-free options, they meet stringent military specifications for durability. Perfect for military and aerospace applications, these connectors provide secure, conductive socket connections with a mating life of 500 cycles, making them essential for mission-critical operations.