紧固件机械性能螺母Mechanicalpropertiesoffasteners–NutsIS0898-2_2012Mechanicalpropertiesoffastenersmadeofcarbonsteelandalloysteel-Part2_Nutswithspecifiedpropertyclasses-CoarsethreadandfinepitchthreadMOD)

ICs21.060.10J13中华人民共和国国家标准GB/T3098.2一2015代替GB/T3098.2-2000,GB/T3098.4-2000紧固件机械性能！螺母Mechanical properties of fasteners-Nuts(ISO 898-2:2012,Mechanical properties of fasteners made of carbon steel andalloy steel-Part 2:Nuts with specified property classes-Coarse threadand fine pitch thread,MOD)2015-12-10发布2017-01-01实施中华人民共和国国家质量监督检验检疫总局中国国家标准化管理委员会发布