scope:

This Standard covers the complete general and dimensional data for four products in the inch series recognized as American National Standard. Heavy hex nut thickness formulas and those for width across flats and width across corners are found in the Appendix of ASME B18.2.2.

The inclusion of dimensional data in this Standard is not intended to imply that all products described herein are stock production sizes. Consumers should consult with manufacturers concerning lists of available stock production sizes.

Fasteners intended for use in structural applications and purchased for government use shall conform to this Standard.