MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With a wide 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 multiple plating options, including cadmium-free finishes for RoHS compliance. The series includes front and rear wall mount, as well as jam nut receptacles, all featuring RFI grounding plugs. Utilizing M39029 rear release crimp contacts, they ensure secure connections. Perfect for military or industrial applications, these connectors are durable, environmentally sealed, and resistant to ingress, making them ideal for demanding settings.