MIL-DTL-38999 Series II connectors boast exceptional versatility and durability, with a capacity of up to 128 contacts in each insert and robust environmental sealing. Operating smoothly in temperatures ranging from -65 °C to 200 °C, these connectors are built for harsh environments. Available in various mounting options such as front wall mount, rear wall mount, jam nut, and box mount configurations, they cater to diverse installation needs. The connectors feature a bayonet coupling design and accommodate M39029 rear release crimp contacts in multiple sizes. Crafted from aluminum with a choice of plating finishes including electroless nickel and cadmium-free options, they ensure reliable performance in demanding applications. Designed in accordance with military specification MIL-DTL-38999 II, these circular receptacles guarantee secure and efficient electrical connections, making them essential components in mission-critical systems.