The MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With an operating temperature range of -65°C to 200°C, they offer durability in extreme conditions. Available in various shell sizes and insert arrangements, these connectors come with M39029 rear release crimp contacts for secure connections. Made of high-strength aluminum, they are offered with different plating options, including cadmium-free finishes for RoHS compliance. The connectors, suitable for military and industrial applications, come in receptacle and grounding plug configurations, providing reliable electrical connections in demanding settings.