I still am puzzled why posters quote stepper motor oz-in/N-cm by quoting a NEMA size?
NEMA 23 is a stepper motor with a 2.3×2.3 inch (58.4×58.5 mm) faceplate
My Vexta catalogue shows 9 steppers motors from 38.2N-cm to 132N-cm, ALL with the NEMA 23 mounting base size.