1.1 本规范涵盖淬火和回火合金钢螺钉0.060至1的要求 1. / 2. 在里面直径1.6至48 mm，最小极限抗拉强度为170 KSI或1170 MPa。 1.2 英制紧固件的数值以英寸-磅为单位，公制紧固件的数值以国际单位制为单位。每个系统中规定的值可能不是精确的等效值；因此，每个系统应独立使用。将两个系统的值合并可能会导致不符合标准。 1.3 以下危险警告仅适用于试验方法部分第节 10 本标准并不旨在解决与其使用相关的所有安全问题（如有）。 本标准的用户有责任在使用前制定适当的安全和健康实践，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（TBT）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》中确立的国际公认标准化原则制定的。

1.1 This specification covers the requirements for quenched and tempered alloy steel screws 0.060 through 1 1 / 2 in. and 1.6 through 48 mm in diameter having a minimum ultimate tensile strength of 170 KSI or 1170 MPa. 1.2 The values are stated in inch-pound units for inch fasteners and SI metric units for metric fasteners. The values stated in each system may not be exact equivalents; therefore each system shall be used independently of the other. Combining values from the two systems may result in non-conformance to the standard. 1.3 The following hazard caveat pertains only to the test method portion, Section 10 , of this specification: 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 and health 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.