MS27505E21B11SD is a high-performance MIL-DTL-38999 Series I connector, featuring a durable aluminum shell with a back panel box mounting flange for secure installation. This receptacle accommodates 12 removable crimp contacts, offering reliable connectivity in harsh environments. With a gold contact plating and electroless nickel/cadmium olive drab finish coating, it ensures excellent conductivity and corrosion resistance. Rated for operating temperatures between -65°C and 175°C, and meeting military specifications, this connector is ideal for demanding applications in aerospace, defense, and industrial settings. Its bayonet mating type and 500-cycle mating life guarantee secure and long-lasting connections, while its environment-resistant design and conductive construction provide dependable performance in the field. RoHS non-compliant.