MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Offering front and rear wall mount options, as well as jam nut receptacles, this connector family is ideal for a variety of applications. With 9 shell sizes and 52 insert arrangements available, they utilize M39029 rear release crimp contacts in various sizes, including coax and twinax. Constructed with high-strength aluminum shells, they come with a range of plating options, such as cadmium and nickel finishes. RoHS compliant versions are also offered. Suitable for military and industrial use, these connectors provide reliable performance with their gold-plated contacts and conformance to MIL-DTL-38999 I specifications.