MIL-DTL-38999 Series II connectors feature up to 128 contacts in an environmentally sealed insert, with an operating temperature range of -65°C to 200°C. These harsh environment connectors offer various mounting options, including front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts. Constructed with aluminum shells and offered in plating options such as cadmium and nickel, these connectors ensure reliable performance in demanding applications. Meeting military specification MIL-DTL-38999 II, they are ideal for use in aerospace, defense, and industrial settings.