MIL-DTL-38999 Series II connectors are designed for demanding environments, offering up to 128 contacts within a secure insert. With a wide operating temperature range of -65°C to 200°C, these connectors ensure reliable performance in extreme conditions. Featuring various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse installation needs. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for efficient connectivity. Crafted from durable aluminum, these connectors come in a range of plating options, including cadmium-free finishes for RoHS compliance. Suitable for military and industrial applications, they provide superior conductivity and environmental sealing, making them ideal for critical operations.