A N A M E R I C A N N A TI O N A L S TA N D A R DScrew Threads: Nomenclature, Definitions, and Letter Symbols B1.7M-1984)Screw Threads:Nomenclature,Definitions, andLetter SymbolsA N A M E R I C A N N A TI O N A L S TA N D A R D Date of Issuance: November 1 7 , 2 0 0 6This Standard will be revised when the Society approves the issuance of a new edition. There will beno addenda or written interpretations of the requirements of this Standard issued to this edition.ASME is the registered trademark of The American Society of Mechanical Engineers.This code or standard was developed under the procedures accredited as meeting the criteria for American NationalStandards. The Standards Committee that approved the code or standard was balanced to assure that individuals fromcompetent and concerned interests have had an opportunity to participate. The proposed code or standard was madeavailable for public review and comment, which provides an opportunity for additional public input from industry, aca-demia, regulatory agencies, and the public-at-large.ASME does not “approve”, “rate,” or “endorse” any item, construction, proprietary device, or activity.ASME does not take any position with respect to the validity of any patent rights asserted in connection with any itemsmentioned in this document, and does not undertake to insure anyone utilizing a standard against liability for infringe-ment of any applicable letters patent, nor assumes any such liability. Users of a code or standard are expressly advisedthat determination of the validity of any such patent rights, and the risk of infringement of such rights, is entirely theirown responsibility.Participation by federal agency representative(s) or pers...
