Newton Metro per Radiante
Newtonium Metrum per Radian
Νιούτον Μέτρο ανά Ακτίνιο
Newton Meter per Radian is the SI unit for Torsion Constant
https://cdd.iec.ch/cdd/iec62720/iec62720.nsf/Units/0112-2---62720%23UAB309
Newton Meter per Radian is the SI unit for Torsion Constant