The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert with environmental sealing. Operating between -65°C and 200°C, these connectors offer durability and reliability. Available in various mount types such as front and rear wall mount, jam nut, and box mount receptacles, they cater to different installation needs. With options for straight, RFI grounding, and standard plugs, including a 90-degree cable clamp, they offer versatility in connectivity. Utilizing M39029 rear release crimp contacts, these connectors ensure secure connections. Constructed with aluminum shells and offering plating options like cadmium and nickel, they provide enhanced protection against corrosion. RoHS compliant finishes are also available, making them suitable for various applications requiring environmental resistance.