The MIL-DTL-38999 Series II connectors offer robust connectivity with up to 128 contacts in an environmentally sealed insert, designed for harsh environments. Featuring various mounting options like front and rear wall mount, jam nut, and box mount receptacles, they ensure secure installations. These connectors, compliant with military specification MIL-DTL-38999 II, are constructed with durable aluminum shells and plated with options such as electroless nickel and cadmium finishes. With a wide operating temperature range from -65 °C to 200 °C, they guarantee reliable performance in extreme conditions. Utilizing M39029 rear release crimp contacts, these connectors come in 9 shell sizes and 52 insert arrangements, catering to diverse application needs. Perfect for military, aerospace, and industrial applications, they provide high conductivity and durability, with a service rating of I and a mating life of 500 cycles. Committed to quality, they offer RoHS compliant cadmium-free finishes, ensuring environmental responsibility. Trust in the MIL-DTL-38999 Series II connectors for secure and efficient electrical connections in demanding environments.