MIL-DTL-38999 Series II connectors offer reliable performance in harsh environments with up to 128 contacts housed in an insert. These environmentally sealed connectors feature a wide operating temperature range from -65 °C to 200 °C. Available in various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse application needs. With 52 insert arrangements and M39029 rear release crimp contacts in multiple sizes, these connectors provide flexibility for different configurations. Constructed with aluminum shells and offering various plating options including cadmium-free finishes, they ensure durability and compliance with RoHS standards. Ideal for military and industrial use, these connectors guarantee secure and efficient electrical connections in demanding settings.