MIL-DTL-38999 Series I connectors feature up to 128 contacts housed in an environmentally sealed insert, designed for rugged use in harsh environments. With an 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 utilize M39029 rear release crimp contacts, ensuring secure connections. The high-strength aluminum shells come in a range of plating options, including cadmium-free finishes, meeting RoHS requirements. Suitable for military and industrial applications, these connectors are ideal for back panel, wall mounting, and jam nut receptacles, offering bayonet coupling for easy installation.