ISO 3294:1975被替代
Parallel shank countersinks for angles 60, 90 and 120 degrees inclusive
出版：International Organization for Standardization
专家解读视频
SS 15 51 61 Ed. 1 (1978) - Identical
NF ISO 3294:2004 - Identical
BS 328-5:1983 - Identical
NS 5341 Ed. 1 (1977) - Identical
UNI 6847:1980 - Equivalent
DIN 334 (2007-12) - Identical
DIN 335 (2007-12) - Identical
GB/T 4258-2004 - Identical
JIS B 4231-1:1999 - Identical
KS B ISO 3294:2003 - Identical
KS B ISO 3294:2013 - Identical
