1、AN AMERICA N NATIO NA L STA NDA RDASME B18.16M-2004Prevailing-Torque Type Steel MetricHex Nuts and Hex Flange NutsRevision and Consolidation of ASME B18.16.1M,B18.16.2M,and B18.16.3MCopyright ASME International Provided by IHS under license with ASME Licensee=FMC Technologies/5914950002 Not for Resa
2、le,05/13/2009 00:34:34 MDTNo reproduction or networking permitted without license from IHS-,-,-ASME B18.16M-2004Prevailing-Torque TypeSteel Metric Hex Nuts andHex Flange NutsRevision and Consolidation of ASME B18.16.1M,B18.16.2M,and B18.16.3MThree Park Avenue New York,NY 10016AN AMERICAN NATIONAL ST
3、ANDARDCopyright ASME International Provided by IHS under license with ASME Licensee=FMC Technologies/5914950002 Not for Resale,05/13/2009 00:34:34 MDTNo reproduction or networking permitted without license from IHS-,-,-Date of Issuance:May 13,2005This Standard will be revised when the Society approv
4、es the issuance of a new edition.There will beno addenda issued to this edition.ASME issues written replies to inquiries concerning interpretation of technical aspects of this Standard.In-terpretations are published on the ASME Web site under the Committee Pages at http:/www.asme.org/codesas they ar
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11、16-5990Copyright 2005THE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.Copyright ASME International Provided by IHS under license with ASME Licensee=FMC Technologies/5914950002 Not for Resale,05/13/2009 00:34:34 MDTNo reproduction or networking permitted without license
12、 from IHS-,-,-CONTENTSForeword.ivCommittee Roster .vCorrespondence With the B18 Committee .vii1Scope .12Comparison With ISO Standards .13Reference Standards .14Terminology .25Dimensions .26Nut Designs and Property Classes .27Width Across Flats.28Thickness .29Wrenching Height .210Gaging of Hex Portio
13、n of Hex Flange Nuts .211Flange.612Bearing Surface.613Countersink.614Threads.615Material,Mechanical,and Performance Properties .616Testing .717Identification Symbols.1018Finish .1019Workmanship .1020Options .1021Inspection and Quality Assurance .1022Designation.10Figure1Load Measuring Device .8Table
14、s1Dimensions of Prevailing-Torque Hex NutsProperty Classes 5,9,and 10 .32Dimensions of Prevailing-Torque Hex Flange NutsProperty Classes 5,9,and 10 .43Proof Loads,Clamp Loads,and Prevailing Torques for Nuts.54Examples for Test Clamp Torque Values.75Test Washers .9iiiCopyright ASME International Prov
15、ided by IHS under license with ASME Licensee=FMC Technologies/5914950002 Not for Resale,05/13/2009 00:34:34 MDTNo reproduction or networking permitted without license from IHS-,-,-FOREWORDAmerican National Standards Committee B18 for the standardization of bolts,screws,nuts,riv-ets,and similar faste
16、ners was organized in March 1922 as Sectional Committee B18 under theaegis of the American Engineering Standards Committee(later the American Standards Associ-ation,the United States of America Standards Institute and,as of October 6,1969,the AmericanNational Standards Institute,Inc.)with the Society of Automotive Engineers and the AmericanSociety of Mechanical Engineers as joint sponsors.Subcommittee 16 was established in 1961 andcharged with the responsibility for technical content of standard
