Home / Standards / GB/T 4459.1-1995 GB/T 4459.1-1995 Active Mechanical drawings--Representation of screw threads and threaded parts 机械制图 螺纹及螺纹紧固件表示法 Standard Type GBT ICS 01.100 CCS J04 Status 现行 Issue Date 1995-11-23 Implementation 1996-07-01 Responsible Dept 国家标准委 Drafting Unit N/A