MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts and environmental sealing. With an operating temperature range from -65°C to 200°C, these connectors offer reliability in extreme conditions. Available in various mounting styles such as front and rear wall mount, jam nut, and box mount, they cater to diverse application needs. The connectors come in aluminum shells with plating options including cadmium and nickel, ensuring durability. Utilizing M39029 rear release crimp contacts, they provide secure connections. RoHS compliant finishes are also available, making them suitable for a wide range of industries.