MS27499E18A53S is a high-performance MIL-DTL-38999 Series II connector designed for rugged environments. With 53 gold-plated removable crimp contacts, this circular receptacle ensures reliable conductivity in extreme conditions. Featuring a box mounting flange shell style, it offers secure and convenient installation. The electroless nickel and iridescent yellow cadmium finish coatings provide excellent corrosion resistance, making it suitable for military and industrial applications. With a wide operating temperature range of -65°C to 150°C and environmental sealing, this connector guarantees durability and performance in harsh settings. Its conductive socket contact style and bayonet mating type further enhance its reliability, making it an ideal choice for high-reliability applications.