MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With environmental sealing and an operating temperature range of -65 °C to 200 °C, these connectors offer reliable performance in a variety of conditions. Available in various configurations including front and rear wall mounts, jam nuts, and box mounts, they provide versatility for different applications. The aluminum shells come with a choice of plating options, including cadmium-free finishes for RoHS compliance. Utilizing M39029 rear release crimp contacts, these connectors ensure secure and efficient connections. Suitable for military and industrial use, they meet stringent standards for durability and conductivity, with a mating life of 500 cycles.