公制系列紧固件的扭矩-张力拧紧，信息报告

[中文适用范围]： 本SAE信息报告作为咨询指南提供。建议根据具体应用情况进行判断。内容尽可能准确呈现，但应用责任由用户承担。文档涵盖了扭矩-张力关系中的多个变量：摩擦、材料、温度、湿度、紧固件和配合件的表面处理、表面状态以及使用的紧固工具或设备类型。本文档还描述了实现满意的紧固接头所需的扭矩管理。本指南仅适用于间隙配合螺纹，如常见的6g/6H配合等级。其他螺纹类型包括干涉配合、机械锁定、预紧扭矩或非ISO公制形式的螺纹可能适用于本标准的某些方面，但未具体涵盖。本文档描述的程序基于确定扭矩-张力关系的通用因素，供最终用户使用。本指南不打算作为采购要求。对于关键接头设计，组装扭矩值应通过使用精确组装组件的实验确定。 [外文原描述]： This SAE Information Report is provided as an advisory guide. Individual application discretion is recommended. The content has been presented as accurately as possible, but responsibility for its application lies with the user. The document covers a number of the variables in the torque-tension relationship: friction, materials, temperature, humidity, fastener and mating part finishes, surfaces, and the kind of tightening tools or equipment used.Also described in this document is the torque management required to achieve satisfactory fastened joint tightening.This guide is limited in application to clearance fit threads, such as the common 6g/6H class of fit. Other thread types including interference fit, mechanical locking, prevailing torque, or forms other than ISO-metric may apply to some aspects of this standard but are not specifically covered.The procedures described in this document are based on general factors for the determination of the torque-tension relationship for the use of end users. This is a guide and is not intended to be made a procurement requirement. For critical joint design, the assembly torque values should be determined by experimentation using the exact assembly components.Cross Reference: J1648_201304,J174_201304