The MIL-DTL-38999 Series I connectors are designed for rugged environments, featuring up to 128 contacts in a sealed insert. With an impressive operating 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. The connectors come in high strength aluminum shells with a range of plating options, including cadmium-free finishes. Ideal for military and aerospace applications, they offer durability and performance with features like front and rear wall mount receptacles, jam nut receptacles, and RFI grounding plugs. RoHS compliant options are also available, making them a versatile choice for demanding environments.