The MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert with environmental sealing. Operating between -65°C and 200°C, they offer reliability in extreme conditions. Available in various shell sizes and insert arrangements, these connectors come in high-strength aluminum shells with plating options including cadmium and nickel. With front and rear wall mount options, as well as jam nut receptacles, they cater to diverse installation needs. The use of M39029 rear release crimp contacts ensures secure connections. RoHS compliant finishes are offered, making them environmentally friendly choices. Suitable for military and industrial applications, these connectors guarantee durability and performance in demanding settings.