The MIL-DTL-38999 Series II connectors are designed for harsh environments, offering up to 128 contacts in an insert. With a wide operating temperature range from -65°C to 200°C, these connectors are ideal for demanding applications. Featuring various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they provide versatility in installation. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12. Constructed with aluminum shells and available in different plating options such as cadmium and nickel, they ensure durability and performance. RoHS compliant finishes are also offered. Suitable for military and industrial use, these connectors guarantee reliable electrical connections in challenging conditions.