MS27505E25B61PC is a high-performance MIL-DTL-38999 Series I connector, featuring a back panel box mounting flange for secure installation. With 61 gold-plated removable crimp contacts, this circular receptacle ensures reliable conductivity in harsh environments. Its rugged aluminum shell, coated with electroless nickel and cadmium olive drab, offers superior protection against corrosion. Designed for military and aerospace applications, this connector is RoHS compliant and rated for operation between -65°C and 175°C. Its bayonet mating type and 500-cycle mating life make it ideal for demanding scenarios, providing a dependable solution for environment-resistant box and through bulkhead mounting receptacle needs.