The MIL-DTL-38999 Series I connectors, designated as MS27505, are essential components for high-reliability electrical applications in harsh environments. Featuring a robust construction with up to 128 contacts housed in an insert, these connectors ensure secure and efficient signal transmission. Designed for military specifications, the Series I connectors offer unparalleled performance with a wide operating temperature range from -65°C to 200°C. The MS27505 connectors come in a versatile array of shell sizes and insert arrangements, accommodating various contact configurations. Constructed with high-strength aluminum shells and available in different plating options, including RoHS-compliant finishes, these connectors guarantee durability and compatibility. With a bayonet coupling mechanism and back panel box mounting flange, they provide easy installation and secure connectivity. The removable crimp contacts, featuring gold plating for enhanced conductivity, ensure reliable signal integrity. Suitable for demanding applications, the MS27505 connectors are ideal for use in military, aerospace, and other high-reliability systems, where environmental resistance and performance are critical.