1、Copyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-ANAMERICANNATIONALSTANDARDADJUSTABLEWRENCHESASMEB107.8-2003(RevisionofASMEB107.8M-1996)Copyright ASME International Provided by IHS under license with
2、ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-Date of Issuance:July 31,2003This 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 i
3、nterpretations of technical aspects of thisStandard.Interpretations are published on the ASME Web site under the Committee Pages at http:/www.asme.org/codes/as they are issued.ASME is the registered trademark of The American Society of Mechanical Engineers.This code or standard was developed under p
4、rocedures 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 madeavailablef
5、orpublicreviewandcommentthatprovidesanopportunityforadditionalpublicinputfromindustry,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
6、 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 determina
7、tion 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.
8、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
9、 otherwise,without the prior written permission of the publisher.The American Society of Mechanical EngineersThree Park Avenue,New York,NY 10016-5990Copyright 2003 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.Copyright ASME International Provided by IHS under lic
10、ense with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-CONTENTSForeword.ivCommittee Roster.vCorrespondence With the B107 Committee.vi1Scope.12Classifications.13Normative References.14Definitions.15Requirements.16Test Procedures.37Safety Requirements and Limita
11、tions of Use.58Designations.5Figures1Definitions.22Test Configuration.33Jaw Clearance Measurement.44Mandrel Configuration.45Parallelism Measurement.5Table1Wrench Properties.3iiiCopyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted w
12、ithout license from IHS-,-FOREWORDThe American National Standards Committee B107,Socket Wrenches and Drives,undersponsorship by The American Society of Mechanical Engineers,was reorganized as an ASMEStandards Committee and its title was changed to Hand Tools and Accessories.In 1996 its scopewas expa
13、nded to address safety considerations.The purposes of this Standard are to define general and dimensional data and safety considera-tions specifically applicable to adjustable wrenches and to specify test methods to evaluateperformance relating to the defined requirements.This Standard is a revision
14、 of B107.8M-1996.Principal changes in the revision are the additionof safety requirements and the removal of metric information.The Standard has been reorganizedto correlate with the other B107 series standards.This revision was approved by the American National Standards Institute on May 6,2003.The
15、 format of this Standard is in accordance with The ASME Codes and Standards WritingGuide 2000.Requests for interpretations of the technical requirements of this Standard should beexpressed in writing to the Secretary,B107 Standards Committee,at the address below.Suggestions for the improvement of th
16、is Standard are welcome.They should be addressed to:The American Society of Mechanical Engineers,Secretary,B107 Standards Committee,Three ParkAvenue,New York,NY 10016-5990.The requirements of this Standard become effective at the time of publication.ivCopyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-ASME B107 COMMITTEEHand Tools and Accessories(The following is the roster of the Committee at the t
