1.1This terminology standard provides a compilation of definitions for terminology used for mechanical fasteners.

1.2Terms in this terminology are organized alphabetically. In Appendix X1 they are listed under fastener characteristic.

1.3Additional definitions are shown in ANSI/ASME B18.12; IFI Glossary of Terms, IFI-139 and IFI-140; and SAE J412.

1.4This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.