MS27505E21F11BB is a high-performance MIL-DTL-38999 Series I connector featuring a robust aluminum shell construction, designed for harsh environmental conditions. With up to 128 contacts in a single insert, this connector offers versatile connectivity options. Operating flawlessly in temperatures ranging from -65 °C to 200 °C, it is ideal for demanding applications. The back panel box mounting flange and bayonet coupling ensure secure and reliable connections. Each connector is meticulously plated with electroless nickel for enhanced durability. With RoHS compliance and available in a variety of finishes, the MS27505E21F11BB is a reliable solution for military, aerospace, and other high-reliability applications.