The MIL-DTL-38999 Series I connectors feature up to 128 contacts within an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65°C to 200°C. Available in various shell sizes and insert arrangements, they offer versatility in applications. These connectors, with front wall mount, rear wall mount, and jam nut receptacles, ensure secure connections. Utilizing M39029 rear release crimp contacts, they guarantee reliable performance. Constructed with high strength aluminum shells and offering plating options including cadmium-free finishes, they meet stringent military specifications. With bayonet coupling and straight plug orientation, these connectors are ideal for demanding environments requiring durability and reliability.