CIRCULAR SIZE 25 56WAY PIN; Military Specification:MIL-DTL-38999 Series III; Circular Connector Shell Style:Straight Plug; No. of Contacts:56Contacts; Circular Contact Type:Crimp Pin; Coupling Style:Threaded; Insert Arrangement:25-4; Connector Body Material:Aluminium Alloy Body; Connector Body Plating:Electroless Nickel; Contact Material:Copper Alloy; Contact Plating:Gold; Insert Rotation:D; Service Class:EMI; Product Range:MIL-DTL-38999 Series III