MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, offering environmental sealing and a wide operating temperature range from -65 °C to 200 °C. With options for front and rear wall mount as well as jam nut receptacles, this harsh environment connector family is designed for durability. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts in various sizes, including coax and twinax. Constructed with high strength aluminum shells, these connectors come in different plating options such as cadmium and electroless nickel. RoHS certified finishes are also available, ensuring compliance with environmental regulations. Suitable for military and industrial applications, these connectors provide reliable connectivity in demanding environments.