ASME_B18-2-2-2010.pdf

AN AMERICAN NATIO NAL STANDARDASME B18.2.2-2010Revision of ASME/ANSI B18.2.2-1987(R2005)Nuts for General Applications:Machine Screw Nuts,Hex,Square,Hex Flange,and Coupling Nuts(Inch Series)INTENTIONALLY LEFT BLANK标准分享网 w w w.b z f x w.c o m 免费下载w w w.b z f x w.c o mASME B18.2.2-2010Revision of ASME/ANSI B18.2.2-1987(R2005)Nuts for GeneralApplications:MachineScrew Nuts,Hex,Square,Hex Flange,and Coupling Nuts(Inch Series)AN AMERICAN NATIONAL STANDARDThree Park Avenue New York,NY 10016 USAw w w.b z f x w.c o mDate of Issuance:November 30,2010This 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 concerning interpretations of technical aspects of thisStandard.Periodically certain actions of the ASME B18 Committee may be published as Cases.Casesand interpretations are published on the ASME Web site under the Committee Pages athttp:/cstools.asme.org as they are issued.ASME is the registered trademark of The American Society of Mechanical Engineers.This code or standard was developed under 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 forpublic review andcomment thatprovides an opportunityfor additional publicinput from industry,academia,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 anyitems mentioned in this document,and does not undertake to insure anyone utilizing a standard against liability forinfringement of any applicable letters patent,nor assumes any such liability.Users of a code or standard are expresslyadvised that determination of the validity of any such patent rights,and the risk of infringement of such rights,isentirely their own responsibility.Participation by federal agency representative(s)or person(s)affiliated with industry is not to be interpreted asgovernment or industry endorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordance with the establishedASME procedures and policies,which precludes the issuance of interpretations 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 MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.标准分享网 w w w.b z f x w.c o m 免费下载w w w.b z f x w.c o mCONTENTSForeword.ivCommittee Roster.viCorrespondence With the B18 Committee.vii1Introduction.12References.13General Data.1Tables1-1Dimensions of Square and Hex Machine Screw Nuts.41-2Dimensions of Small Pattern Hex Machine Screw Nuts.52Dimensions of Square Nuts.63Dimensions of Hex Flat Nuts and Hex Flat Jam Nuts.74Dimensions of Hex Nuts and Hex Jam Nuts.85Dimensions of Hex Slotted Nuts.96Dimensions of Hex Thick Nuts.107Dimensions of Hex Thick Slotted Nuts.118Dimensions of Heavy Square Nuts.129Dimensions of Heavy Hex Flat Nuts and Heavy Hex Flat Jam Nuts.1310Dimensions of Heavy Hex Nuts and Heavy Hex Jam Nuts.1411Dimensions of Heavy Hex Slotted Nuts.1512Dimensions of Hex Flange Nuts and Large Hex Flange Nuts.1613Dimensions of Hex Coupling Nuts.17Mandatory AppendixISlot Gages and Gaging for Slotted Nuts.19Nonmandatory AppendicesAFormulas for Nut Dimensions.21BWrench Openings for Square and Hex Nuts.24iiiw w w.b z f x w.c o mFOREWORDAmerican National Standards Committee B18 for the standardization of bolts,screws,nuts,rivets,and similar fasteners was organized in March 1922 as Sectional Committee B18 underthe aegis of the American Engineering Standards Committee(later the American StandardsAssociation,then the United States of America Standards Institute,Inc.)with the Society ofAutomotive Engineers and the American Society of Mechanical Engineers as joint sponsors.Subcommittee 2 was subsequently established and charged with the responsibility for technicalcontent of standards covering wrench head bolts and nuts.Subcommittee 2,after appraisal of therequirements of industry,developed a proposed standardseries of bolt head and nut dimensions.This proposal was finally approved and designated aTentative American Standard in February 1927.A first revision of the document was designated as an American Standard in March 1933 andwas followed by a second revision that was granted approval as an American Standard inJanuary 1941.Following reorganization of the B18 Committee in 1947,Subcommittee 2 was asked to expandthe standard on head proportions int