MIL-DTL-38999 Series II connectors are designed for harsh environments, with up to 128 contacts housed in an insert. These connectors are fully sealed against environmental factors and can operate within a wide temperature range from -65 °C to 200 °C. Featuring various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts for reliable connections. Constructed with aluminum shells and offering multiple plating options, including RoHS certified finishes, they ensure durability and compliance with industry standards. Suitable for military and industrial applications, these connectors guarantee high performance with their gold-plated contacts, socket contact style, and 500-cycle mating life. With their conductive properties and ingress protection, they are ideal for demanding environments that require secure and efficient electrical connections.