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ASME_B18.2.6-2019.pdf

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1、AN AM E R IC AN NAT IO NAL STANDARDASME B18.2.6-2019(Revision of ASME B18.2.6-2010)Fasteners for Use in Structural ApplicationsASME B18.2.6-2019(Revision of ASME B18.2.6-2010)Fasteners forUse in StructuralApplicationsAN AMERICAN NATIONAL STANDARDxDate of Issuance:March 29,2019This Standard will be r

2、evised when the Society approves the issuance of a new edition.ASME issues written replies to inquiries concerning interpretations of technical aspects of this Standard.Interpretations arepublishedontheCommitteewebpageandunderhttp:/go.asme.org/InterpsDatabase.PeriodicallycertainactionsoftheASMEB18 C

3、ommittee may be published as Cases.Cases are published on the ASME website under the B18 Committee Page athttp:/go.asme.org/B18committee as they are issued.Errata to codes and standards may be posted on the ASME website under the Committee Pages to provide corrections toincorrectlypublisheditems,ort

4、ocorrecttypographicalorgrammaticalerrorsincodesandstandards.Sucherratashallbeusedon the date posted.The B18 Committee Page can be found at http:/go.asme.org/B18committee.There is an option available to automaticallyreceive an e-mail notification when errata are posted to a particular code or standar

5、d.This option can be found on theappropriate Committee Page after selecting“Errata”in the“Publication Information”section.ASME is the registered trademark of The American Society of Mechanical Engineers.ThiscodeorstandardwasdevelopedunderproceduresaccreditedasmeetingthecriteriaforAmericanNationalSta

6、ndards.TheStandardsCommitteethatapprovedthecodeorstandardwasbalancedtoassurethatindividualsfromcompetentandconcernedinterestshavehadanopportunityto participate.The proposed codeorstandardwasmadeavailable forpublic reviewandcommentthatprovidesanopportunityfor additional public input from industry,aca

7、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 items mentioned in thisdocument,anddoesnot

8、undertaketoinsureanyoneutilizingastandardagainstliabilityforinfringementofanyapplicableletterspatent,norassumeanysuchliability.Usersofacodeorstandardareexpresslyadvisedthatdeterminationofthevalidityofanysuchpatentrights,andtherisk of infringement of such rights,is entirely their own responsibility.P

9、articipation by federal agency representative(s)or person(s)affiliated with industry is not to be interpreted as government or industryendorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordance with the established ASME proce

10、duresand 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 EngineersTwo Park Avenue,New

11、 York,NY 10016-5990Copyright 2019 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.CONTENTSForeword.ivCommittee Roster.viiCorrespondence With the B18 Committee.viii1Introductory Notes.12Heavy Hex Structural Bolts:ASTM F3125/F3125M.23Heavy Hex Nuts:ASTM A563 and ASTM

12、A194/A194M.64Hardened Steel Washers:ASTM F436/F436M.85Compressible Washer-Type Direct Tension Indicators:ASTM F959/F959M.116Twist-Off-Type Structural Bolts,Heavy Hex and Round:ASTM F3125/F3125M.13Figure6.8.1-1Groove Diameter.15Tables2.1-1Dimensions of Heavy Hex Structural Bolts.32.1.9.2-1Maximum Gri

13、p Gaging Lengths and Minimum Body Lengths for Structural Bolts.53.1-1Dimensions of Heavy Hex Nuts for Use With Structural Bolts.74.1.1-1Dimensions for Hardened Steel Circular and Circular Clipped Washers.94.2.1-1Dimensions of Hardened Beveled Washers With Slope or Taper in Thickness 1:6.105.1-1Dimen

14、sions for Compressible Washer-Type Direct Tension Indicators.126.1.1-1Dimensions of Twist-Off-Type Structural Bolts:Heavy Hex Head and Round Head Configurations14iiiFOREWORDTheB18StandardsCommitteeforthestandardizationofbolts,screws,nuts,rivets,andsimilarfastenerswasorganizedinMarch1922astheB18Secti

15、onalCommitteeundertheaegisoftheAmericanEngineeringStandardsCommitteelatertheAmericanStandardsAssociation,thentheUnitedStatesofAmericaStandardsInstituteand,asofOctober6,1969,theAmericanNationalStandardsInstitute,Inc.(ANSI),withtheSocietyofAutomotiveEngineersandtheAmericanSocietyofMechanicalEngineersa

16、sjointsponsors.B18Subcommittee2wassubsequentlyestablishedandchargedwiththerespon-sibility for technical content of standards covering wrench head bolts and nuts.Subcommittee2,afterappraisaloftherequirementsofindustry,developedaproposedstandardseriesofboltheadandnut dimensions.This proposal was finally approved and designated a Tentative American Standard in February 1927.AfirstrevisionofthedocumentwasdesignatedasanAmericanStandardinMarch1933andwasfollowedbyasecondrevision,which was granted appro

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