The MIL-DTL-38999 Series II connectors are designed for harsh environments, with up to 128 contacts housed in an environmentally sealed insert. Operating at temperatures ranging from -65 °C to 200 °C, these connectors offer reliable performance in demanding conditions. Available in various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse installation needs. Featuring RFI grounding and standard plugs with a 90-degree cable clamp, these connectors come in 9 shell sizes and 52 insert arrangements, using M39029 rear release crimp contacts. Constructed with durable aluminum shells, they offer plating options including electroless nickel and cadmium finishes. With RoHS certified cadmium-free variants, they ensure compliance with environmental regulations. Suitable for military and industrial applications, these connectors deliver secure and efficient electrical connections in critical settings.