MS27656T21B41BD is a MIL-DTL-38999 Series I connector, designed for harsh environments with a wide operating temperature range from -65°C to 175°C. Featuring a back panel wall mounting flange, this receptacle accommodates 41 removable crimp contacts (size 20) for secure and reliable connections. Constructed from aluminum with an electroless nickel and cadmium olive drab finish, it offers excellent durability and conductivity. This high-reliability connector is ideal for military and aerospace applications, meeting stringent environmental and performance standards.