The MS27656T25B61SB is a high-performance MIL-DTL-38999 Series I connector, designed for robust electrical connectivity in harsh environments. Featuring a durable aluminum shell with a choice of Electroless Nickel or Cadmium Olive Drab plating, this circular receptacle is both rugged and corrosion-resistant. With 61 gold-plated removable crimp contacts (size 20), it ensures reliable signal transmission in extreme conditions, with a wide operating temperature range from -65°C to 175°C. The wall-mount design, with a back panel and bayonet coupling, offers secure and easy installation. This connector is ideal for military, aerospace, and other high-reliability applications, where environmental resilience and long-term performance are critical. RoHS non-compliant.