The MIL-DTL-38999 Series II connectors are designed for demanding environments, with up to 128 contacts in an insert. These connectors offer reliable performance in a wide temperature range from -65°C to 200°C, making them suitable for various applications. Featuring thin-walled construction, they come in different mounting options such as 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 for secure connections. With aluminum shells and various plating options including cadmium-free finishes, these connectors ensure durability and compliance with RoHS regulations. Perfect for military and industrial use, they provide efficient connectivity in harsh conditions.