CONNECTOR, CIRCULAR, 21WAY, SIZE 22; Military Specification:MIL-DTL-38999 Series II; Circular Connector Shell Style:Box Mount Receptacle; No. of Contacts:21Contacts; Circular Contact Type:Crimp Socket; Coupling Style:Bayonet; Insert Arrangement:22-21; Connector Body Material:Aluminium Alloy Body; Connector Body Plating:Electroless Nickel; Contact Material:Copper Alloy; Contact Plating:Gold; Insert Rotation:N; Service Class:Environmentally Sealed; Product Range:MIL-DTL-38999 Series II