CIRCULAR, SIZE 21, 79WAYS, PIN; Product Range:-; Circular Connector Shell Style:Wall Mount Receptacle; No. of Contacts:79Contacts; Circular Contact Type:Crimp Pin; Coupling Style:Bayonet; Insert Arrangement:21-35; Connector Body Material:Aluminium Alloy Body; Connector Body Plating:Electroless Nickel; Contact Material:Copper Alloy; Contact Plating:Gold; Insert Rotation:A; Service Class:Environmentally Sealed; Equivalent Military Specification:MIL-DTL-38999 Series I; Approval Category:MIL-DTL-38999 Series I