中华人民共和国国家标准
NATIONAL
STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 32076.7-2015
High-strength structural bolting assemblies for preloading—Part 7: M39~M64—Hexagon bolt with large width across flats and nut assemblies 预载荷高强度栓接结构连接副 第7部分:M39~M64 大六角头螺栓和螺母连接副
Issued Date:2015-10-09
Implemented Date:2016-06-01
Issued by:
The Standardization Administration of the People's Republic of China