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. Offering various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they are designed for harsh environments. Available in 9 shell sizes and 52 insert arrangements, these connectors use M39029 rear release crimp contacts. Constructed with aluminum shells, they come in plating options including cadmium-free finishes, ensuring reliability. Ideal for military and aerospace applications, these connectors provide secure connectivity with gold-plated removable crimp contacts, meeting stringent performance standards.