1.1 本规程规定了缝纫线的标准票号，无论纤维含量或线类型如何。 1.2 以英寸-磅单位表示的值应被视为标准值；以英文单位表示的值仅作为信息提供，不是完全等效的。 1.3 本标准并不旨在解决与其使用相关的所有安全问题（如果有的话）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践，并确定监管限制的适用性。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 =====意义和用途====== 4.1 这种缝纫线票号系统的开发是为了克服线行业使用多个未定义和无关的票号系统所造成的混乱。 4.2 缝纫线制造商使用这种做法来确定分配给缝纫线的票号。票号是线中粗纤维量的指示器。它基于坯布线而不是成品线，因为漂白、染色、拉伸、丝光或缝纫整理等整理过程会显著改变表观线径，使其可能成为原纤维存在的不足指标。由于上述原因，通过调整成品螺纹的尺寸来验证票号是不切实际的。 4.3 为了更好地理解纱线的线密度与特克斯尺寸中的票号尺寸之间的关系，请参阅实施规程 D861 . 4.4 为了更好地理解各种纱线尺寸的转换与缝纫线使用的票号之间的关系，请参阅 D2260 .

1.1 This practice establishes standard ticket numbers for sewing thread regardless of fiber content or type of thread. 1.2 The values stated in inch-pound units are to be regarded as the standard; the values in English units are provided as information only and are not exact equivalents. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 4.1 This system of sewing thread ticket numbers was developed to overcome the confusion arising from the use by the thread industry of a multiple number of undefined and unrelated ticketing systems. 4.2 The practice is used by sewing thread manufacturers to determine the ticket number to be assigned to a sewing thread. The ticket number is an indicator of the amount of raw fiber in the thread. It is based on greige thread rather than finished thread because finishing processes such as bleaching, dyeing, stretching, mercerizing, or sewing finish application significantly change the apparent thread size so that it may become an inadequate indicator of raw fiber present. Because of the foregoing it is not practical to verify the ticket number by sizing the finished thread. 4.3 To better understand the relationship between linear density of yarns and ticket number sizes in tex sizes, see Practice D861 . 4.4 To better understand the relationship between the conversion of various yarn sizes and the ticket numbers used for sewing threads, see D2260 .