MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, offering environmental sealing and a wide operating temperature range of -65°C to 200°C. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. These connectors, with options for front and rear wall mount receptacles and jam nut receptacles, are designed for harsh environments. Constructed with high-strength aluminum shells and various plating options, including RoHS certified finishes, they ensure reliable performance in demanding applications.