1.1本规范涵盖了米制螺纹紧固件上电沉积涂层的应用、性能和尺寸要求。它规定了涂层厚度、补充铬酸盐饰面、耐腐蚀性、管理氢脆风险的预防措施以及高强度和表面硬化紧固件的氢脆消除。它还强调了滚镀和机架镀之间的差异，并就每种工艺的适用性提出了建议。 以下预防说明仅适用于本规范第节试验方法部分: 本标准并非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。

1.1 This specification covers application, performance and dimensional requirements for electrodeposited coatings on threaded fasteners with metric screw threads. It specifies coating thickness, supplementary chromate finishes, corrosion resistance, precautions for managing the risk of hydrogen embrittlement and hydrogen embrittlement relief for high-strength and surface-hardened fasteners. It also highlights the differences between barrel and rack plating and makes recommendations as to the applicability of each process. The following precautionary statement pertains to the test method portion only, Section, 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.