ANSI/ASME B1.12-1987 螺纹.五级干涉配合.配合螺纹

标准号：ANSI/ASME B1.12-1987
中文标准名称：螺纹.五级干涉配合.配合螺纹
英文标准名称：Class 5 Interference - Fit Thread
标准类型：J05
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：J05
国际标准分类号：21.040.30
适用范围：Provides dimensional tables for external and internal plastic flow interference-fit (Class 5) threads of modified National thread form in the coarse thread series (NC) in sizes 0.250 in. through 1.500 in. This is not the ANSI B1.1 UN thread form. It is intended that designs conforming with this Standard will provide adequate torque conditions which fall within the limits shown in Table 8. The minimum torques are intended to be sufficient to insure that externally threaded members will not loosen in service; the maximum torques establish a ceiling below which seizing, galling, or torsional failure of the externally threaded components is reduced. This Standard provides for the maximum allowable interference.