ISO-4156-1 Complete Document History
Straight cylindrical involute splines - Metric module, side fit - Part 1: Generalities

Complete Current Edition:
   2ND EDITION - Part 1: Generalities - Feb. 1, 2021

Obsolete Revision Information:
   1ST EDITION - PART 1: GENERALITIES, STRAIGHT CYLINDRICAL INVOLUTE SPLINES - Oct. 1, 2005