This SAE Aerospace Recommended Practice (ARP) provides the definition for a control lever connection with 60° "V" serrations for aircraft engine to aircraft power or control levers.
SAE ARP260D-2012 history
2018SAE ARP260E-2018 Control Lever Connections (60° V Serrations)
2012SAE ARP260D-2012 Control Lever Connections (60° V Serrations)
1996SAE ARP260D-1996 Control Lever Connections (60 Degree V Serrations)
1995SAE ARP260C-1995 CONTROL LEVER CONNECTIONS (60° V SERRATIONS)
1969SAE ARP260C-1969 CONTROL LEVER CONNECTIONS (60° V SERRATIONS)
1962SAE ARP260B-1962 CONTROL LEVER - CONNECTIONS (60° V SERRATIONS)
1955SAE ARP260A-1955 CONTROL LEVER - CONNECTIONS (60° V SERRATIONS)
1953SAE ARP260-1953 CONTROL LEVER - CONNECTIONS (60° V SERRATIONS)