JIS-B-1021 Complete Document History
Tolerances for fasteners -- Part 1: Bolts, screws, studs and nuts -- Product grades A, B and C

Complete Current Edition:
   2003 EDITION - Reaffirmed in 2013 - March 20, 2003

Obsolete Revision Information:
   1985 EDITION - TOLERANCE SYSTEM FOR THREADED - Jan. 1, 1985