本文包含了各种类型的方形和六角螺母的完整通用和尺寸数据，这些螺母被公认为SAE标准，常用于汽车和其他地面机动车辆及工业设备。还包括用于螺母扳手开口的附件。本标准中包含的尺寸数据并不意味着所描述的所有产品都是库存生产尺寸。请用户就库存生产规模清单咨询制造商。

Included herein are complete general and dimensional data for the various types of square and hex nuts recognized as SAE Standard and commonly used in automotive and other ground based motor vehicles and industrial equipment. Also included are appendixes covering wrench openings for nuts. The inclusion of dimensional data in this standard is not intended to imply that all of the products described are stock production sizes. Users are requested to consult with manufacturers concerning lists of stock production sizes.