MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors offer reliability in extreme conditions. Available in various shell sizes and insert arrangements, they use M39029 rear release crimp contacts for secure connections. The high-strength aluminum shells come in different plating options, including cadmium-free finishes. This connector family includes front and rear wall mount receptacles, jam nut receptacles, and RFI grounding plugs, ensuring versatility for different applications. With a straight plug shell style and bayonet coupling, they provide easy and secure mating. RoHS compliance ensures environmental responsibility in their use. Perfect for military and industrial applications, these connectors offer durability and performance in demanding settings.