1、AN AMERICAN NATIO NAL STANDARD ASME B18.2.4.6M-2010Revision of ANSI B18.2.4.6M-1979(R2003)Metric Heavy Hex NutsCopyright 2010 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCopyrighted material licensed to Stanford Univer
2、sity by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.INTENTIONALLY LEFT BLANKCopyright 2010 by the American Society of Mechanical Engineers.No reproduction may be made of this material withou
3、t written consent of ASME.cCopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.ASME B18.2.4.6M-2010Revision of ANSI B18.2.4.6M-1979(R2003)Metr
4、ic HeavyHex NutsAN AMERICAN NATIONAL STANDARDCopyright 2010 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford
5、 University User.No further reproduction or distribution is permitted.Uncontrolled when printed.Date of Issuance:March 31,2010This Standard will be revised when the Society approves the issuance of a new edition.There willbe no addenda issued to this edition.ASME issues written replies to inquiries
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12、ions by individuals.No part of this document may be reproduced in any form,in an electronic retrieval system or otherwise,without the prior written permission of the publisher.The American Society of Mechanical EngineersThree Park Avenue,New York,NY 10016-5990Copyright 2010 byTHE AMERICAN SOCIETY OF
13、 MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.Copyright 2010 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010
14、 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.CONTENTSForeword.ivCommittee Roster.vCorrespondence With the B18 Committee.vii1Scope.12Comparison With ISO Standards.13Referenced Standards.14Terminology.15Dimensions.16Width Across Flats.17Th
15、ickness.18Tops and Bearing Surfaces.19Corner Fill.210 True Position of Hexagon to the Tapped Hole.211 Countersink.212 Threads.213 Material and Mechanical Properties.214 Finish.215 Identification Symbols.216 Inspection and Quality Assurance.217 Designation.218 Workmanship.2Table1Dimensions of Heavy H
16、ex Nuts.3Nonmandatory AppendixAGeneral Dimension Requirements From ISO 4775.5iiiCopyright 2010 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.FOREWORDThe B18 American National Standards Committee for the standar