MS27499E20B41SA is a high-performance MIL-DTL-38999 Series II connector featuring a robust aluminum shell with a durable electroless nickel and cadmium olive drab finish, ensuring reliable operation in harsh environments. This box mounting flange receptacle accommodates 41 gold-plated removable crimp contacts (size 20), offering excellent conductivity and a mating life of 500 cycles. With a wide operating temperature range of -65°C to 175°C, it is suitable for demanding military and aerospace applications. The bayonet coupling design provides secure and efficient connectivity, while the environmental resistance and RoHS compliance further enhance its reliability. Designed for through-bulkhead mounting, this connector is ideal for use in rugged systems where performance and durability are critical.