This part of IEC 61191 prescribes requirements for lead and hole solder assemblies. The requirements pertain to those assemblies that totally use through-hole mounting technology (THT), or the THT portions of those assemblies that include other related technologies (i.e. surface mount, chip mounting, terminal mounting).
IEC 61191-3:2017 Referenced Document
IEC 60194:2015 Printed board design, manufacture and assembly - Terms and definitions
IEC 61191-1:2013 Printed board assemblies.Part 1: Generic specification.Requirements for soldered electrical and electronic assemblies using surface mount and related assembly technologies