MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65 °C to 200 °C, these connectors are suitable for a wide range of applications. Available in various shell sizes and insert arrangements, they offer versatility in design. The connectors come in high-strength aluminum shells with plating options including gold, electroless nickel, and cadmium-free finishes. Offering reliability with a mating life of 500 cycles, they are ideal for military and aerospace use, meeting MIL-DTL-38999 I specifications.