ASME B1.12-1987 5级压配合螺纹

标准号：ASME B1.12-1987
中文标准名称：5级压配合螺纹
英文标准名称：Class 5 interference-fit thread
标准类型：J04
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：J04
国际标准分类号：21.040.30
引用标准：ANSI B1.1;ANSI/ASME B1.2;ANSI/ASME B1.3M;ANSI/ASME B1.7M;Socieîy of Manufacturing Engineers.2 Tool and Manufacturing Engineers Handbook- Volume 1, Machining.;ANSI B94.9;Metal Cutting Tool Institute. ’ Taps, Ground ïñread, Standards and Dimensions. Cleve
适用范围：This Standard provides dimensional tables for externaland internal plastic flow interference-fit (Class 5)threads of modified National thread form in the coarsethread series (NC) in sizes 0.250 in. through 1.500 in.This is not the ANSI B1.l UN thread form. It is intendedthat designs conforming with this Standard willprovide adequate torque conditions which fall within thelimits shown in Table 8. The minimum torques are intendedto be sufficient to insure that externally threadedmembers will not loosen in service; the maximumtorques establish a ceiling below which seizing, galling,or torsional failure of the externally threaded componentsis reduced. This Standard provides for the maximumallowable interference.Appendices A, B, C, and D contain useful informationthat is supplementary to this Standard, such as reprintsof the obsolete tentative and alternate Class 5standards, U.S. Navy ship specifications for elastic interference-fit coarse thread series from 0.250 in. through2.000 in., U.S. Navy ship specifications for Class 5Modified which includes nickel-copper-aluminum alloyexternal threads, and an interference metal comparisonof standard to nonstandard interference-fit threads.