MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, designed for harsh environments with a wide operating temperature range of -65°C to 200°C. Available in various configurations including front wall mount, rear wall mount, and jam nut receptacles, they offer RFI grounding options. With 52 insert arrangements and M39029 rear release crimp contacts, these connectors ensure reliable performance in aerospace and military applications. Constructed with high-strength aluminum shells and offering plating options like cadmium and electroless nickel, they guarantee durability and conductivity. RoHS compliant finishes are also available, catering to environmental regulations. Ideal for use in environments requiring high reliability and performance, these connectors are essential components in critical systems.