MIL-DTL-38999 Series II connectors feature up to 128 contacts sealed for harsh environments, with an operating range of -65 °C to 200 °C. Available in various mounting styles, including front and rear wall mount, these connectors offer versatility for different applications. The aluminum shells come in multiple plating options, such as electroless nickel and cadmium finishes, with RoHS compliant alternatives. With gold-plated contacts and a bayonet coupling mechanism, they ensure reliable electrical connections in demanding conditions. Suitable for military and industrial use, these connectors are designed for longevity, with a contact mating life of 500 cycles and environmental resistance.