本标准涵盖ASTM A563M中定义的性能等级为5、9和10的公制有效扭矩六角螺母和六角法兰螺母的完整通用、尺寸、机械和性能数据。本标准中包含的尺寸数据并不意味着所有螺母尺寸以及本文所述的各种选项都是库存项目。消费者应咨询供应商关于库存生产常用扭矩六角螺母和六角法兰螺母的清单。

This Standard covers the complete general, dimensional, mechanical, and performance data for metric prevailing-torque hex nuts and hex flange nuts of property classes 5, 9, and 10 as defined in ASTM A563M. The inclusion of dimensional data in this Standard is not intended to imply that all of the nut sizes in conjunction with the various options described herein are stock items. Consumers should consult with suppliers concerning lists of stock production prevailing-torque hex and hex flange nuts.