MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With operating temperatures ranging from -65 °C to 200 °C, they offer reliability in extreme conditions. Available in various shell sizes and insert arrangements, these connectors utilize M39029 rear release crimp contacts. The high strength aluminum shells come with plating options such as cadmium and nickel, meeting RoHS certification standards. The connector family includes front and rear wall mount, jam nut receptacles, and RFI grounding plugs, ensuring versatile connectivity solutions. With a mating type of bayonet and a contact gender of male, they are suitable for diverse applications requiring durable and conductive connections.