1、AN AMERICAN NATIO NAL STANDARDASME B18.16.4-2008Serrated Hex Flange Locknuts 90,000 psi(Inch Series)REAFFIRMED 2013FOR CURRENT COMMITTEE PERSONNELPLEASE E-MAIL CSasme.orgIntentionally left blankASME B18.16.4-2008Serrated HexFlange Locknuts90,000 psi(Inch Series)AN AMERICAN NATIONAL STANDARDDate of I
2、ssuance:October 7,2008This 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 thisdocument.Periodically,certain actions of the ASME
3、 B18 Committee may be published as Cases.Cases and 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 proce
4、dures 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 forp
5、ublic 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
6、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 assume any such liability.Users of a code or standard are expresslyadvised that det
7、ermination 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 sta
8、ndard.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 sys
9、tem or otherwise,without the prior written permission of the publisher.The American Society of Mechanical EngineersThree Park Avenue,New York,NY 10016-5990Copyright 2008 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.CONTENTSForeword.ivCommittee Roster.vCorresponde
10、nce With the B18 Committee.vi1Scope.12Comparison to ISO Standards.13Terminology.14Reference Standards.15Dimensions.16Serrations.17Tops of Nuts.18True Position of Hexagon to Tapped Hole.19Countersink.110 Threads.311 Material and Hardness.312 Mechanical Requirements.313 Finish.414 Grade and Identifica
11、tion Marking.415 Inspection and Quality Assurance.416 Designation.417 Options.418 Workmanship.4Tables1Regular Serrated Flange Locknuts.22Large Serrated Flange Locknuts.33Proof Load and Torque Values.4iiiFOREWORDThis 2008 edition was approved by the American National Standards Institute on August 25,
12、2008,and designated as ASME B18.16.4-2008.ivASME B18 COMMITTEEStandardization of Bolts,Nuts,Rivets,Screws,Washers,and Similar Fasteners(The following is the roster of the Committee at the time of approval of this Standard.)STANDARDS COMMITTEE OFFICERSD.A.Clever,ChairR.D.Strong,Vice ChairR.L.Crane,Se
13、cretarySTANDARDS COMMITTEE PERSONNELV.Cartina,Continental-AeroD.A.Clever,Deere&Co.A.P.Cockman,Ford Motor Co.B.D.Burnside,Alternate,Ford Motor Co.R.L.Crane,The American Society of Mechanical EngineersA.C.DiCola,Wrought Washer Co.B.A.Dusina,Federal Screw WorksJ.S.Foote,Contributing Member,Trade Associ
14、ationManagement,Inc.D.S.George,ND IndustriesJ.Greenslade,Industrial Fasteners InstituteJ.J.Grey,Contributing Member,Fastener Consulting Services,Inc.B.Hasiuk,Contributing Member,Defense Supply CenterPhiladelphiaA.Herskovitz,ConsultantJ.Jennings,Contributing Member,Naval Surface Warfare CenterSUBCOMM
15、ITTEE 16 LOCKNUTSW.R.Stevens,Chair,RamcoV.Cartina,Vice Chair,Continental-AeroA.P.Cockman,Ford Motor Co.B.A.Dusina,Federal Screw WorksM.A.Elmi,Catepillar,Inc.D.S.George,ND IndustriesJ.Greenslade,Industrial Fasteners InstituteJ.J.Grey,Fastener Consulting Services,Inc.vJ.F.Koehl,Contributing Member,Spi
16、rol International Corp.W.H.Kopke,ITW Shakeproof Assembly ComponentsJ.G.Langenstein,Honorary Member,ConsultantW.J.Lutkus,Heli-Coil EmhartD.A.McCrindle,Canadian Fasteners InstituteM.D.Prasad,Contributing Member,General Motors Corp.S.Savoji,ITW MedalistW.R.Schevey,Contributing Member,BGM Fastener Co.,Inc.W.R.Stevens,RamcoR.D.Strong,General Motors Corp.S.W.Vass,ConsultantC.B.Wackrow,Contributing Member,MNP Corp.W.K.Wilcox,ConsultantC.B.Williamson,Fastenal Co.C.J.Wilson,ConsultantR.B.Wright,Contribut