MS27505E21B41SC is a high-reliability MIL-DTL-38999 Series I circular connector, featuring a back panel box mounting receptacle with a durable aluminum shell. With 41 removable crimp socket contacts, this connector offers reliable electrical connections in harsh environments. Gold-plated contacts ensure excellent conductivity, while the electroless nickel and cadmium olive drab finish provides enhanced corrosion resistance. Designed for military and aerospace applications, this connector is rated for operation between -65°C and 175°C, making it ideal for use in demanding environmental conditions. Its bayonet mating system allows for secure and quick connections, with a service life of 500 cycles. With its environmental resistance and high-reliability construction, the MS27505E21B41SC is the perfect choice for critical mission-critical systems.