MS27656T17B55SC is a high-performance MIL-DTL-38999 Series I connector, featuring a total of 55 gold-plated removable crimp contacts for reliable electrical connections in harsh environments. With a wide operating temperature range from -65°C to 175°C, this circular receptacle is designed for wall mounting applications, offering excellent environmental resistance and conductivity. Constructed with a durable aluminum shell and available in electroless nickel or cadmium olive drab finishes, it ensures long-term reliability in military and aerospace settings. This high-reliability connector is not RoHS compliant, making it suitable for use in critical mission-critical systems.