pins used in the single point attaching of a towed machine to towing machines or leading machines. Application of this standard assumes that there is a clevis on the towing machine conforming to ANSI/ASABE AD 6489- 3:2004 and a ring on the towed machine conforming to ASABE/ISO 21244:2008. Additionally, this standard defines loading conditions for drawbar pin retention systems.

When the towing machine does not conform to ANSI/ASABE AD 6489-3:2004 and/or the towed machine does not conform to ASABE/ISO 21244:2008, fit and performance of pins designed per this standard may be affected. However, usage of applicable specifications derived from this standard is encouraged for such cases.

Note: ANSI/ASABE AD6489-3:2004 and ASABE/ISO 21244:2008 provide essential information related to tractor drawbars and associated implement hitch rings.