MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for rugged applications with an operating temperature ranging from -65 °C to 200 °C. Available in various shell sizes and insert arrangements, these connectors offer versatility in mounting options, including front and rear wall mount as well as jam nut receptacles. Utilizing M39029 rear release crimp contacts, they ensure secure connections, with options for gold plating for enhanced conductivity. Constructed with high strength aluminum shells and various plating choices such as electroless nickel, these connectors are built to withstand harsh environments. RoHS compliant finishes are also available, catering to diverse industry requirements. Perfect for military and industrial applications, these connectors provide reliable performance in demanding conditions.