MIL-DTL-38999 Series I connectors are ideal for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65 °C to 200 °C, they offer reliable performance in extreme conditions. Available in various shell sizes and insert arrangements, these connectors come in high-strength aluminum shells with options for plating, including cadmium-free finishes. The Bayonet coupling design ensures secure mating, with M39029 rear release crimp contacts for easy installation. Perfect for military and aerospace applications, these connectors guarantee durability and conductivity with a mating life of 500 cycles.