The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With a wide operating temperature range from -65°C to 200°C, these connectors are suitable for demanding applications. Available in various mounting options such as front wall, rear wall, and box mount receptacles, they offer versatility in installation. The connectors come in aluminum shells with plating options including cadmium-free finishes, ensuring durability and compliance with RoHS standards. Utilizing M39029 rear release crimp contacts, they provide reliable connectivity with options for straight, RFI grounding, and standard plugs. Ideal for military and industrial use, these connectors are known for their rugged construction and high performance in challenging conditions.