MIL-DTL-38999 Series I connectors feature up to 128 contacts within an environmentally sealed insert, ideal for harsh environments. With an operating temperature range of -65 °C to 200 °C, they offer reliability in extreme conditions. Available in various shell sizes and insert arrangements, including rear release crimp contacts, these connectors ensure secure connections. Constructed with high-strength aluminum shells and offering multiple plating options, such as cadmium-free finishes, they meet stringent military specifications. The connectors, with bayonet coupling and box mounting options, cater to diverse applications requiring rugged performance.