MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various configurations including front and rear wall mount, jam nut, and box mount receptacles, these connectors offer versatility. With options for straight, RFI grounding, and standard plugs, they accommodate different installation needs. Utilizing M39029 rear release crimp contacts, they ensure secure connections. Crafted with aluminum shells and offering plating choices such as electroless nickel and cadmium finishes, these connectors meet stringent military specifications. Suitable for demanding applications, they provide reliable performance with a service rating of M and ingress protection against environmental factors.