MIL-DTL-38999 Series II connectors offer rugged performance with up to 128 contacts in a sealed insert, ideal for harsh environments. Featuring various mounting options like front and rear wall mount, jam nut, and box mount receptacles, they provide versatile connectivity. Available in 9 shell sizes and 52 insert arrangements, these connectors use M39029 rear release crimp contacts for reliable connections. Crafted from aluminum, they come with plating options including cadmium-free finishes. With an operating temperature range from -65°C to 200°C, they ensure durability in demanding conditions, making them suitable for military and industrial applications.