ISO 2306:1972現行
Drills for use prior to tapping screw threads
出版：International Organization for Standardization
專家解讀視頻
BIS IS 10952:1984 (R2015) - Identical
AS 2181.1-1978 - Equivalent
BS 1157:1975 - Equivalent
DIN 336 (2003-07) - Identical
NBN E 66 101:1973 - Identical
SNV ISO 2306:1972 - Identical
SMS 1724 Ed. 3 (1973) - Equivalent
KS B ISO 2306:2012 - Identical
KS B ISO 2306:2003 - Identical
GB/T 20330-2006 - Modified
