MIL-DTL-38999 Series I connectors are robust solutions for harsh environments, featuring up to 128 contacts in a sealed insert. With a wide operating temperature range from -65 °C to 200 °C, these connectors offer reliability in extreme conditions. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. Constructed with high strength aluminum shells and offered in different plating options including cadmium-free finishes, these connectors meet stringent military specifications. Suitable for front wall mount, rear wall mount, and jam nut receptacles, they ensure efficient signal transmission with gold-plated contacts. Featuring bayonet coupling and A keyway polarization, they provide easy and secure mating. Designed for durability, with a mating life of 500 cycles, these connectors are ideal for applications requiring environment-resistant and conductive connectivity.