CIRCULAR, SIZE 13, 4WAYS, PIN; Military Specification:MIL-DTL-38999 Series I; Circular Connector Shell Style:Jam Nut Receptacle; No. of Contacts:4Contacts; Circular Contact Type:Crimp Pin; Coupling Style:Bayonet; Insert Arrangement:13-4; Connector Body Material:Aluminium Alloy Body; Connector Body Plating:Olive Drab Chromate over Cadmium; Contact Material:Copper Alloy; Contact Plating:Gold; Insert Rotation:N; Service Class:Environmentally Sealed; Product Range:MIL-DTL-38999 Series I