The MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, with an impressive operating temperature range of -65°C to 200°C. These connectors, designed for harsh environments, come in various configurations including front and rear wall mount as well as jam nut receptacles. With 9 shell sizes and 52 insert arrangements available, they accommodate M39029 rear release crimp contacts in different sizes. Constructed with high-strength aluminum shells, they offer a choice of plating options such as cadmium and nickel. Suitable for military applications, these connectors ensure reliable performance with their gold-plated contacts and durable construction, making them ideal for demanding environments.