MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts within an environmentally sealed insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors offer reliability in extreme conditions. Available in various mounting styles such as front wall mount and jam nut receptacles, they cater to diverse installation needs. The aluminum shells come in different plating options, including cadmium-free finishes, ensuring compliance with RoHS regulations. Utilizing M39029 rear release crimp contacts, these connectors guarantee secure connections. Suitable for military and industrial applications, they provide durability with a mating life of 500 cycles. The gold-plated contacts ensure excellent conductivity, making them ideal for critical electronic systems.