MIL-DTL-38999 Series I connectors offer robust connectivity with up to 128 contacts, featuring durable aluminum shells and a wide operating temperature range from -65°C to 200°C. Designed for harsh environments, they come in various shell sizes and insert arrangements, accommodating M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8. Available in front wall mount, rear wall mount, and jam nut receptacle options, these connectors ensure secure connections in demanding applications. With plating choices including cadmium-free finishes, such as electroless nickel and black anodized aluminum, they meet stringent RoHS compliance standards. The bayonet coupling mechanism and gold contact plating guarantee reliable and high-performance electrical connections, making them suitable for military and industrial use.