The MIL-DTL-38999 Series II connectors are designed for harsh environments, offering up to 128 contacts in a single insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors are ideal for demanding applications. Available in various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they provide versatility in installation. Featuring aluminum shells with options for plating finishes like electroless nickel and cadmium olive drab, they ensure durability and reliability. The connectors utilize M39029 rear release crimp contacts, providing secure connections. RoHS certified cadmium-free finishes are also available. Suitable for military and industrial use, these connectors are resistant to environmental factors, making them a dependable choice for critical operations.