JIS B 6339-1:2011 Tool shanks with 7/24 taper for automatic tool changers -- Part 1: Dimensions and designation of shanks of forms A, AD, AF, U, UD and UF
2011JIS B 6339-1:2011 Tool shanks with 7/24 taper for automatic tool changers -- Part 1: Dimensions and designation of shanks of forms A, AD, AF, U, UD and UF
1998JIS B 6339:1998 Machining centers -- Tool shanks and retention knobs
1992JIS B 6339:1992 Machining centers -- Tool shanks and retention knobs