Nomenclature, Definitions, and Letter Symbols for Screw Threads ANSI/ASME B1.7M

Nomenclature, Definitions, and Letter Symbols for Screw Threads ANSI/ASME B1.7M

ANSI/ASME B1.7 SCOPE:
The purpose of ANSI/ASME B1.7 is to establish a uniform practice for standard screw threads with regard to the following: (a) Screw thread nomenclature; (b) Letter symbols for the designating features of a screw thread for use on drawings, in tables that set forth dimensional standards, in other records, and for expressing mathematical relationships. ANSI/ASME B1.7 is a glossary of terms, illustrations, and illustrated table showing the application of symbols, and a table of thread series designation. Many of the terms and symbols specified in ANSI/ASME B1.7:2006 vary considerably from those previously specified in ANSI/ASME B1.7:1984 because ISO terms and symbols have been adopted where the intended definition is the same.

Related Specification:
ISO 5408; Screw threads -- Vocabulary, is the ISO specification which has the same function as B1.7M.

Original Posting: 10/21/2009
Last Revision: 10/17/2017
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