MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts within an insert and offering environmental sealing. With an operating temperature range from -65 °C to 200 °C, they provide reliable performance in extreme conditions. Available in various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, these connectors are versatile for different applications. Constructed with aluminum shells and offering multiple plating options including gold and electroless nickel, they ensure durability and conductivity. Compliant with MIL-DTL-38999 II military specification, these circular connectors are ideal for use in aerospace, defense, and industrial sectors.