1.1本规范涵盖与连接杆一起使用的碳钢轨道螺栓和碳钢螺母，以连接铁路轨道中的钢轨。 1.2定义了两个等级的轨道螺栓: 1.2.1一级，低碳，未经处理，主要用于工业和矿山轨道。 1.2.2 2 2级，热处理，用于一般轨道。 1.3定义了两个等级的螺母: 1.3.1 1级低碳钢或软钢，主要用于1级轨道螺栓。 1.3.2 2 2级，中碳，用于轨道螺栓的一般应用。 1.4以英寸-磅为单位的数值应视为标准值。

1.1 This specification covers carbon steel track bolts and carbon steel nuts for use in conjunction with joint bars to connect rails in railroad track. 1.2 Two grades of track bolts are defined: 1.2.1 Grade 1, Low-Carbon, Untreated, primarily for industrial and mine track use. 1.2.2 Grade 2, Heat-Treated, for general track use. 1.3 Two grades of nuts are defined: 1.3.1 Grade 1, Low-Carbon or Soft Steel, primarily for application on Grade 1 track bolts. 1.3.2 Grade 2, Medium-Carbon, for general application on track bolts. 1.4 The values stated in inch-pound units are to be regarded as the standard.