1、AN AMERICAN NATIONAL STANDARDASME B107.300-2010(Incorporation of ASME B107.14, B107.28, and B107.29)Torque InstrumentsINTENTIONALLY LEFT BLANKASME B107.300-2010(Incorporation of ASME B107.14, B107.28, and B107.29)TorqueInstrumentsAN AMERICAN NATIONAL STANDARDDate of Issuance: April 19, 2010This Stan
2、dard 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 B107 Committee may be publis
3、hed 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 procedures accredited as meeting
4、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 for public review and comment
5、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 position with respect to the validity of any pate
6、nt 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 determinati
7、on 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 standar
8、d.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
9、 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.CONTENTSForeword ivCommittee Roster . vCorrespond
10、ence With the B107 Committee . viASME B107.14 Hand Torque Tools (Mechanical) . 1ASME B107.28 Electronic Torque Instruments . 13ASME B107.29 Electronic Tester, Hand Torque Tools. 17Nonmandatory AppendixA Tables 21iiiFOREWORDThe American National Standards Committee B107 on Socket Wrenches and Drives
11、was origi-nally under the sponsorship of The American Society of Mechanical Engineers (ASME). It wassubsequently reorganized as an ASME Standards Committee and its title was changed to HandTools and Accessories. In 1996, the Committees scope was expanded to include safetyconsiderations.The purpose o
12、f B107.300 is to define essential performance and safety requirements for thefollowing three types of torque instruments:(a) manually operated torque instruments, commonly used for mechanical measurement oftorque for control of the tightness of threaded fasteners(b) electronic torque testers used fo
13、r checking manually operated hand-held torque wrenchesand screwdrivers(c) manually operated electronic torque instruments with integral or interchangeable headsIt includes requirements for endurance, torque value ranges, and accuracy for these torqueinstruments. It specifies test methods to evaluate
14、 performance related to the defined requirementsand safety, and indicates limitations of safe use.This Standard may also be used as a guide by state authorities or other regulatory bodies inthe formulation of laws or regulations. It is also intended for voluntary use by establishmentsthat use or man
15、ufacture the instruments covered.This Standard includes(a) B107.14, Hand Torque Tools (Mechanical), approved by the American National StandardsInstitute on December 16, 2004(b) B107.28, Electronic Torque Instruments, approved by the American National StandardsInstitute on March 14, 2005(c) B107.29,
16、Electronic Tester, Hand Torque Tools, approved by the American National StandardsInstitute on March 16, 2005Prior editions of these individual standards are obsolete and no longer available.In addition to the consolidation of these individual torque standards into this Standard, principalchanges are
17、 the uniform inclusion of performance requirements and test methods that evaluateboth performance and safety as well as uniform format for sections on definitions, references,performance requirements, tests, and safety requirements and limitations of use.Members of the Hand Tools Institute Torque In
18、struments Standards Committee through theirknowledge and hard work have been major contributors to the development of the B107 standards.Their active efforts in the promotion of these standards is acknowledged and appreciated.The format of this Standard is in accordance with The ASME Codes however,
19、they shouldnot contain proprietary names or information.Requests that are not in this format will be rewritten in this format by the Committee priorto being answered, which may inadvertently change the intent of the original request.ASME procedures provide for reconsideration of any interpretation w
20、hen or if additionalinformation that might affect an interpretation is available. Further, persons aggrieved by aninterpretation may appeal to the cognizant ASME Committee or Subcommittee. ASME does not“approve,” “certify,” “rate,” or “endorse” any item, construction, proprietary device, or activity
21、.Attending Committee Meetings. The B107 Committee regularly holds meetings, which are opento the public. Persons wishing to attend any meeting should contact the Secretary of the B107 Stan-dards Committee.viASME B107.300-2010 (B107.14)ASME B107.141 Scope . 22 Classification . 23 References 34 Defini
22、tions 35 Requirements 36 Tests 87 Safety Requirements and Limitations of Use. 10Figures1 Type I, Class A 32 Type I, Class B . 33 Type I, Class C 44 Type I, Class D 45 Type I, Class E, Style 1 . 46 Type I, Class E, Style 2 . 57 Type II, Class A, Style 2 58 Type II, Class A, Style 3 (Shown Without Int
23、erchangeable Head) 59 Type II, Class B, Style 2 510 Type II, Class B, Style 3 (Shown Without Interchangeable Head) 511 Type II, Classes A and B, Style 3 (Shown With Interchangeable Head) . 512 Flexible Head 613 Type III, Class A, Style 1, Design A 614 Type III, Class A, Style 1, Design B . 615 Type
24、III, Class A, Style 2, Design A 616 Type III, Class A, Style 2, Design B . 617 Type III, Class B . 718 Gravity-Independent Test Position 819 Graduated Range 920 Gravity-Dependent Test Positions 1021 Accuracy Test Flowchart . 11Tables1 Torque Instrument Capacity . 72 Torque Instrument Increments 83 T
25、orque Instrument Accuracy 84 Torque Instrument Operating Load 81ASME B107.300-2010 (B107.14)HAND TORQUE TOOLS (MECHANICAL)1 SCOPEThis Standard provides performance and safetyrequirements for manually operated torque instruments,commonly used for mechanical measurement of torquefor control of the tig
26、htness of threaded fasteners. It isnot intended to describe products infrequently utilizedor those designed for special purposes.This Standard may be used as a guide by state authori-ties or other regulatory bodies in the formulation of lawsor regulations. It is also intended for voluntary use byest
27、ablishments that use or manufacture the instrumentscovered.2 CLASSIFICATION2.1 Type I: IndicatingClass A: deflecting beamStyle 1: plain scaleStyle 2: scale with signal mechanismStyle 3: scale with memory indicatorClass B: deflecting beam with interchangeable headconnectionStyle 1: plain scaleStyle 2
28、: scale with signal mechanismStyle 3: scale with memory indicatorClass C: rigid housingStyle 1: plain scaleStyle 2: scale with signal mechanismStyle 3: scale with memory indicatorClass D: rigid housing with interchangeable head con-nectionStyle 1: plain scaleStyle 2: scale with signal mechanismStyle
29、 3: scale with memory indicatorClass E: screwdriver gripStyle 1: enclosed dialStyle 2: exposed dial2.2 Type II: SettingClass A: graduatedStyle 1: nonratchetingDesign A: clockwise (right-hand) and counter-clockwise (left-hand) torquingDesign B: clockwise torquingDesign C: counterclockwise torquingSty
30、le 2: ratchetingDesign A: clockwise (right-hand) and counter-clockwise (left-hand) torquing2Design B: clockwise torquingDesign C: counterclockwise torquingStyle 3: interchangeable head connectionDesign A: clockwise (right-hand) and counter-clockwise (left-hand) torquingDesign B: clockwise torquingDe
31、sign C: counterclockwise torquingStyle 4: flexible ratchet headDesign A: clockwise (right-hand) and counter-clockwise (left-hand) torquingDesign B: clockwise torquingDesign C: counterclockwise torquingClass B: nongraduatedStyle 1: nonratchetingDesign A: clockwise (right-hand) and counter-clockwise (
32、left-hand) torquingDesign B: clockwise torquingDesign C: counterclockwise torquingStyle 2: standard ratcheting headDesign A: clockwise (right-hand) and counter-clockwise (left-hand) torquingDesign B: clockwise torquingDesign C: counterclockwise torquingStyle 3: interchangeable head connectionDesign
33、A: clockwise (right-hand) and counter-clockwise (left-hand) torquingDesign B: clockwise torquingDesign C: counterclockwise torquingStyle 4: flexible ratchet headDesign A: clockwise (right-hand) and counter-clockwise (left-hand) torquingDesign B: clockwise torquingDesign C: counterclockwise torquing2
34、.3 Type III: LimitingClass A: screwdriver gripStyle 1: graduatedDesign A: external square driveDesign B: internal hex driveStyle 2: nongraduatedDesign A: external square driveDesign B: internal hex diveClass B: “T” handle gripStyle 1: nonratchetingStyle 2: ratchetingASME B107.300-2010 (B107.14)3 REF
35、ERENCESThe following documents form a part of this Standardto the extent specified herein. The latest edition shallbe used.ASME B107.4, Driving and Spindle Ends for PortableHand, Impact, Air, and Electric Tools (Percussion ToolsExcluded)ASME B107.10, Handles and Attachments for HandSocket WrenchesAS
36、ME B107.29, Electronic Tester, Hand Torque ToolsPublisher: The American Society of MechanicalEngineers (ASME), Three Park Avenue, New York,NY 10016-5990; Order Department: 22 Law Drive, Box2300, Fairfield, NJ 07007-2300 (www.asme.org)Guide to Hand Tools Selection, Safety Tips, ProperUse and CarePubl
37、isher: Hand Tools Institute (HTI), 25 NorthBroadway, Tarrytown, NY 10591 (www.hti.org)4 DEFINITIONSaccuracy: the permissible deviation, tolerance, or errorband. A higher value means a lower certainty ofcorrectness.full scale: see rated capacity.graduation: a mark on the instrument indicating a torqu
38、evalue.hand torque instrument: tool combining hand wrenchingand torque measurement functions, formerly referred toas “hand torque wrench.”increment: the value of the difference between adjacentgraduations.indicated value: for Type I, the value the instrument dis-plays when torque is applied; for Typ
39、es II and III, thevalue to which the instrument is set or preset.measured value: the actual torque determined by a torquetester.operating load: the operating load shall be calculated bydividing the rated capacity by the distance between theaxis of the torque moment and the center of the grip ordesig
40、nated load point.rated capacity: for graduated instruments, the maximumgraduated torque value, also known as full scale; fornongraduated instruments, the maximum manufac-turer-specified torque.scale: the representation of the range of the instrument,divided into increments marked by numbered andunnu
41、mbered graduations.setting: the amount of torque the instrument is expectedto apply.3Fig. 1 Type I, Class AHandleScalePointerDriveFig. 2 Type I, Class B10FOOTPOUNDS1003030202040405 REQUIREMENTSFigures 1 through 20 are descriptive and not restric-tive. They are not intended to preclude the manufactur
42、eor purchase of other forms of torque instruments con-forming to this Standard.Torque Instruments shall pass all applicable tests insection 6.5.1 Design5.1.1 Type I, Classes A, B, C, and D Indicating(a) Operation. Instruments shall indicate torqueapplied through a deflecting member. They shall opera
43、tein both clockwise and counterclockwise directions.(1)TypeI,ClassesAandBDeflectingBeam. Flexingof a cantilever beam connecting the square drive andthe hand grip shall provide the basis of operation. Type I,Class A deflecting beam torque instruments may be sim-ilar to that shown in Fig. 1. Type I, C
44、lass B deflectingbeam torque instruments may be similar to that shownin Fig. 2.(2) Type I, Classes C and D Rigid Housing. Thedeflecting member and dial mechanism shall beenclosed within the rigid housing. The pointer and dialface shall be protected by a transparent cover whichshall be so located and
45、 constructed as to be reasonablyfree from accidental damage resulting from being struckor abraded. Type I, Class C rigid housing torque instru-ments may be similar to that shown in Fig. 3. Type I,Class D rigid housing torque instruments may be similarto that shown in Fig. 4.(3) Type I, Classes B and
46、 D Interchangeable HeadConnection. The torque instrument shall be equippedwith a connection, suitable for accepting a variety ofmating wrenching heads. The connection and standardASME B107.300-2010 (B107.14)Fig. 3 Type I, Class CDrive HousingDialHand gripFig. 4 Type I, Class Dwrenching heads shall b
47、e designed so that the require-ments of para. 5.8 are met throughout the specified accu-racy range. The wrenching heads shall comply with therequirements of para. 5.5. Indicating torque instrumentswith an interchangeable head may be similar to Fig. 2(Class B) or Fig. 4 (Class D).(b) Indicator. A dia
48、l or scale shall be located to permitconvenient and accurate reading. The graduation marksshall be colored and shaped to be distinct and easilyread. The width of the graduation mark shall not begreater than one-half the adjacent space width. Thewidth of the pointer tip or indicator line shall not be
49、greater than the widest graduation mark, nor shall thepointer completely cover any graduation mark on theouter scale. The pointer shall be located close to thescale face so as to meet the parallax error requirementsof para 6.2.(c) Hand Position. If, in order to achieve the requiredaccuracy, it is necessary to apply the load at a specificpoint on the hand grip, the hand grip shall be pivotedat that point.(d) Auxiliary Functions. Additional features may beincorporated on the torque instrument to improve accu-racy or usefulness. The inclusion of such features shallnot be cause for re
