JIS B 1004:1975被替代
Hole sizes before threading
出版：Japanese Standards Association
專家解讀視頻
基本信息
標準編號： JIS B 1004:1975
標準類別：Standard
出版單位：Japanese Standards Association
標準頁數：16
標準簡介
This Japanese Industrial Standard specifies the diameters of holes to be drilled before threading the following screw threads or before carrying on similar works, hereinafter referred to as the hole size before "threading". The hole sizes before threading for the thread sizes M1.7, M2.3 and M2.6 shall comply with the Appendix to this standard.
替代本標準的新標準
