MS27505E23B53BC is a high-performance MIL-DTL-38999 Series I connector, designed for demanding military and aerospace applications. With a rugged aluminum shell and environmentally sealed construction, this connector ensures reliable performance in harsh operating conditions, withstanding temperatures ranging from -65 °C to 175 °C. Featuring a back panel box mounting flange and bayonet coupling, it offers secure and easy installation. With 53 removable crimp contacts (size 20), it provides ample connectivity in a compact design. The electroless nickel and cadmium olive drab finish options enhance durability, while RoHS compliance ensures environmental responsibility. Suitable for use in E-rated service environments, this connector is ideal for critical applications requiring robust and reliable electrical connections.