ISO 5673:1993

Agricultural tractors and machinery — Power take-off drive shafts and position of power-input connection

Specifies a system for classifying power take-off (PTO) drive shafts; the requirements for PTO yoke bosses; the PTO drive shaft sizes; the positioning of the power input connection for PTO-driven implements; the clearance zones. Applies to PTO drive shafts required for the connection of agricultural machines and implements to tractors.