MIL-DTL-38999 Series II connectors are designed for rugged environments, featuring up to 128 contacts in an insert for secure connectivity. With an operating temperature range from -65 °C to 200 °C, these connectors are built to withstand extreme conditions. Available in various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. The connectors come in aluminum shells with multiple plating options, including cadmium-free finishes for RoHS compliance. Utilizing M39029 rear release crimp contacts, they ensure reliable performance with a mating life of 500 cycles. Suitable for military and industrial applications, these connectors provide EMI/RFI shielding and environmental resistance, making them ideal for demanding scenarios.