MIL-DTL-38999 Series II connectors are designed for demanding environments, featuring up to 128 contacts within a sealed insert. With an operating temperature range of -65 °C to 200 °C, these connectors offer reliability in extreme conditions. Available in various configurations such as front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse installation needs. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts. Constructed with aluminum shells and offering plating options like gold and electroless nickel, they ensure robust performance and durability. Compliant with military specification MIL-DTL-38999 II, these connectors are ideal for applications requiring rugged connectivity in aerospace, defense, and industrial sectors.