MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, offering robust environmental sealing for a wide operating temperature range of -65 °C to 200 °C. Available in various mounting options like front wall, rear wall, and jam nut receptacles, these connectors ensure reliable performance in harsh environments. With 52 insert arrangements and M39029 rear release crimp contacts, they provide versatility for different applications. Constructed with high-strength aluminum shells and offering plating options including cadmium-free finishes, these connectors meet stringent military specifications for durability and conductivity. With their bayonet coupling and straight plug design, they facilitate easy installation and maintenance, making them ideal for demanding industrial and military applications.