本标准涵盖了公认为美国国家标准的公制重型六角结构螺栓的一般数据和尺寸数据。本标准中包含的尺寸数据并不意味着所有尺寸以及本文所述的各种选项都是库存产品。请消费者就库存生产重型六角结构螺栓清单咨询制造商。政府使用的重型六角结构螺栓应符合本标准以及附录III的要求。

This Standard covers the general and dimensional data for metric heavy hex structural bolts recognized as American National Standard. The inclusion of dimensional data in this Standard is not intended to imply that all of the sizes in conjunction with the various options described herein are stock production items. Consumers are requested to consult with manufacturers concerning lists of stock production heavy hex structural bolts. Heavy hex structural bolts purchased for Government use shall conform to this standard, and additionally to the requirements of Appendix III.