MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert that is environmentally sealed for reliable performance. With an operating temperature range from -65°C to 200°C, these connectors offer durability in extreme conditions. Available in various mounting options such as front wall mount, rear wall mount, jam nut, and more, they provide versatility in installation. The connectors come in 9 shell sizes and 52 insert arrangements, utilizing rear release crimp contacts for secure connections. Constructed with aluminum shells and offered in different plating options including cadmium-free finishes, they meet RoHS compliance standards. These connectors, known for their MIL-DTL-38999 II military specification, are ideal for applications requiring rugged and high-performance connectivity.