1、Copyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-AN AMERICAN NATIONAL STANDARDADJUSTABLEWRENCHESASME B107.8-2003(Revision of ASME B107.8M-1996)Copyright ASME International Provided by IHS under licens
2、e with 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 co
3、ncerning interpretations 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 devel
4、oped 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
5、madeavailable for public review and comment that provides an opportunity for additional public input 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 posit
6、ion 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 assume any such liability. Users of a code or st
7、andard 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
8、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 i
9、n 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 2003 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.Copyr
10、ight ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-CONTENTSForeword ivCommittee Roster . vCorrespondence With the B107 Committee . vi1 Scope . 12 Classifications . 13 Normative References 14 Definitions 15 R
11、equirements 16 Test Procedures 37 Safety Requirements and Limitations of Use 58 Designations 5Figures1 Definitions 22 Test Configuration . 33 Jaw Clearance Measurement . 44 Mandrel Configuration 45 Parallelism Measurement 5Table1 Wrench Properties . 3iiiCopyright ASME International Provided by IHS u
12、nder license with ASMENot for ResaleNo reproduction or networking permitted without 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 a
13、nd its title was changed to Hand Tools and Accessories. In 1996 its scopewas expanded 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 eva
14、luateperformance relating to the defined requirements.This Standard is a revision 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 r
15、evision was approved by the American National Standards Institute on May 6, 2003.The 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 Secretar
16、y, B107 Standards Committee, at the address below.Suggestions for the improvement of this 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 b
17、ecome 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 time of
18、approval of this Standard.)OFFICERSG. E. Olson, ChairW. T. Pagac, Vice ChairJ. R. Bird, SecretaryCOMMITTEE PERSONNELJ. R. Bird, The American Society of Mechanical EngineersJ. D. Davidson, Sears Roebuck and Co.P. A. Desmarais, Danaher Tool GroupJ. S. Foote, Trade Association Management, Inc.A. Hersko
19、vitz, ConsultantD. S. McKittrick, Western ForgeG. E. Olson, Gene Olson, Engineering Consultant Ltd.W. T. Pagac, Snap-on, Inc.D. M. Eggert, Alternate, Snap-on, Inc.J. M. Ster, General Services AdministrationI. L. Harding, Alternate, General Services AdministrationR. B. Wright, Wright Tool Co.W. C. Sn
20、yder, Alternate, Wright Tool Co.SUBCOMMITTEE 2 FLAT WRENCHESW. T. Pagac, Chair, Snap-on, Inc.J. D. Davidson, Sears Roebuck and Co.R. F. Paeth, SK Handtools Corp.W. C. Snyder, Wright Tool Co.vCopyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networki
21、ng permitted without license from IHS-,-CORRESPONDENCE WITH THE B107 COMMITTEEGeneral. ASME Standards are developed and maintained with the intent to representthe consensus of concerned interests. As such, users of this Standard may interact with theCommittee by requesting interpretations, proposing
22、 revisions, and attending Committeemeetings. Correspondence should be addressed to:Secretary, B107 Standards CommitteeThe American Society of Mechanical EngineersThree Park AvenueNew York, NY 10016-5990Proposing Revisions. Revisions are made periodically to the Standard to incorporatechanges that ap
23、pear necessary or desirable, as demonstrated by the experience gained fromthe application of the Standard. Approved revisions will be published periodically.The Committee welcomes proposals for revisions to this Standard. Such proposals shouldbe as specific as possible, citing the paragraph number(s
24、), the proposed wording, and adetailed description of the reasons for the proposal, including any pertinent documentation.Interpretations. Upon request, the B107 Committee will render an interpretation of anyrequirement of the Standard. Interpretations can only be rendered in response to a writtenre
25、quest sent to the Secretary of the B107 Standards Committee.The request for interpretation should be clear and unambiguous. It is further recom-mended that the inquirer submit his/her request in the following format:Subject: Cite the applicable paragraph number(s) and the topic of the inquiry.Editio
26、n: Cite the applicable edition of the Standard for which the interpretationis being requested.Question: Phrase the question as a request for an interpretation of a specificrequirement suitable for general understanding and use, not as a requestfor an approval of a proprietary design or situation. Th
27、e inquirer mayalso include any plans or drawings, which are necessary to explainthe question; however, they should not contain proprietary names orinformation.Requests that are not in this format may be rewritten in the appropriate format by theCommittee prior to being answered, which may inadverten
28、tly change the intent of theoriginal request.ASME procedures provide for reconsideration of any interpretation when or if additionalinformation that might affect an interpretation is available. Further, persons aggrieved byan interpretation may appeal to the cognizant ASME Committee or Subcommittee.
29、 ASMEdoes not “approve,” “certify,” “rate,” or “endorse” any item, construction, proprietarydevice, or activity.Attending Committee Meetings. The B107 Standards Committee regularly holds meet-ings, which are open to the public. Persons wishing to attend any meeting should contactthe Secretary of the
30、 B107 Standards Committee.viCopyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-ASME B107.8-2003ADJUSTABLE WRENCHES1 SCOPEThis Standard provides performance and safetyrequirements for open-end adjustable
31、 wrenches, withrack and worm adjustment, generally used on both hex-agonal and square bolts and nuts. Inclusion of dimen-sional data in this Standard is not intended to implythat all products described herein are stock productionsizes. Consumers are requested to consult with manufac-turers concernin
32、g lists of production sizes.2 CLASSIFICATIONSAdjustable wrenches shall be of the following types:Type I: standard openingsType II: wide openings3 NORMATIVE REFERENCESThe following documents form a part of this Standardto the extent specified herein. At the time of publication,the editions indicated
33、are valid. All standards are subjectto revision, and parties to agreements based on thisStandard are encouraged to investigate the possibilityof applying the most recent editions of the publicationslisted below.ASTM B 117-1997, Standard Practice for Operating SaltSpray (Fog) ApparatusASTM B 571-1997
34、, Standard Practice for QualitativeAdhesion Testing of Metallic CoatingsASTM B 537-1997, Standard Practice for Rating of Elec-troplated Panels Subjected to Atmospheric ExposureASTM D 968-1993, Standard Test Methods for AbrasionResistance of Organic Coatings by Falling AbrasiveASTM E 18-2000, Standar
35、d Test Methods for RockwellHardness and Rockwell Superficial Hardness ofMetallic MaterialsPublisher: American Society for Testing and Materials(ASTM), 100 Barr Harbor Drive, West Conshohocken,PA 19428-2959Guide to Hand Tools: Selection, Safety Tips, and ProperUse and CarePublisher: Hand Tools Instit
36、ute (HTI), 25 North Broad-way, Tarrytown, NY 1059114 DEFINITIONSSee Fig. 1 as applicable.adjustable jaw: movable portion of the wrench that con-tacts the fastener.adjusting worm: portion of the wrench used to adjust theclearance between the fixed and adjustable jaw.fixed jaw: portion of the frame th
37、at contacts the fastener.frame: portion of the wrench containing the fixed jawand handle.handle: portion of the wrench by which the tool is held.proof torque: predetermined test torque to which a sampleis subjected.worm pin: pin used to retain the adjusting worm in theframe.worm spring: spring used
38、to induce friction between theframe and adjusting worm for holding the adjustingworm in any preset position.5 REQUIREMENTSThe figures in this Standard are descriptive and notrestrictive, and are not intended to preclude the manu-facture of wrenches that are otherwise in accordancewith this Standard.
39、5.1 MaterialsThe materials used in the manufacture of thewrenches shall be such as to produce tools conformingto this Standard. The frame, adjustable jaw, adjustingworm, and worm pin shall be steel.5.2 MarkingWrenches shall be marked in a legible and permanentmanner with the manufacturers name or wi
40、th a trade-mark of such known character that the source of manu-facture and country of origin may be readily determined.5.3 HardnessThe frame (fixed jaw and handle) and adjustable jawshall show a hardness of not less than 40 HRC nor morethan 50 HRC when tested as specified in para. 6.1.5.4 Proof Tor
41、queWrenches shall withstand the proof torque specifiedherein for the appropriate size without failure or perma-nent deformation (set) that might affect the durabilityCopyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without lice
42、nse from IHS-,-ASME B107.8-2003 ADJUSTABLE WRENCHESFixed jawAdjustable jawAdjusting wormFrameHandleWorm pinFig. 1 Definitionsor serviceability of the wrench. There shall be no forma-tion of cracks or fracture of any part of the wrench,including jaw, frame, worm, and worm pin. After prooftorque tests
43、, there shall be no resultant binding or loos-ening of the adjustable jaw. Before and after the prooftorque test, each wrench shall be opened and closed toverify the wrench operates over the full range of thejaw opening.5.5 Finish5.5.1 Surface Finish. Wrenches shall be free from rust,fins, burrs, pi
44、ts, nodules, and other conditions that mayimpair their serviceability, durability, safety, or appear-ance. The external forge flash shall be removed to blendsmoothly with adjacent surfaces.5.5.2 Coatings. The frame and the adjustable jawshall have one or more of the coatings described below,with the
45、 exception of zinc. Worm and worm pin shallhave any of the following coatings:(a) Nickel-Chromium Plate. On wrenches with decora-tive nickel-chromium plating, the minimum thicknessshall be 0.00015 in. for nickel and 0.000003 in. for chrome,unless the wrench passes the test in para. 6.5. Nickeliron u
46、ndercoating (16% iron max.) may be substitutedfor nickel.(b) Phosphate. Wrenches having a chemically pro-duced phosphate coating also shall have a coating ofrust preventive.(c) Oxide. Wrenches having a coating consisting of achemically produced oxide also shall have a coating ofrust preventive.(d) Z
47、inc. Adjusting worms and worm pins may havea coating of electrodeposited zinc of 0.0003 in. minimumthickness.(e) Alternate Coatings. Alternate coatings may be usedin lieu of nickel-chromium and shall be subjected to theAlternate Coating Test, as specified in para. 6.5.25.6 DesignWrenches shall consi
48、st essentially of a frame (fixedjaw and handle), an adjustable jaw, an adjusting worm,a worm pin, and a worm spring. The angle of the open-ing of the jaw shall be in accordance with Fig. 2. Whenthe wrench is in the full open position, the jaw shallextend to provide full contact across the flat hexag
49、onalbar of a size that fits the full jaw opening specified forType I wrenches. The wrench shall be designed to allowfree movement of the working parts. The wrench maybe provided with or without a movable, jaw-lockingdevice.5.6.1 Frame (Fixed Jaw and Handle). Means shallbe provided in the wrench end of the frame for acceptingthe assembly of the adjustable jaw, adjusting worm, andworm pin. The handgrip end of the handle shall beprovided wit
