002248U001 A N A M E R I C A N N A T I O N A L S T A N D A R D ASME B107 300 2010 (Incorporation of ASME B107 14, B107 28, and B107 29) Torque Instruments Copyright ASME International Provided by IHS[.]
ASME B107.300-2010 (Incorporation of ASME B107.14, B107.28, and B107.29) Torque Instruments A N A M E R I C A N N AT I O N A L STA N DA R D `,,```,,,,````-`-`,,`,,`,`,,` - Copyright ASME International Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS Not for Resale `,,```,,,,````-`-`,,`,,`,`,,` - INTENTIONALLY LEFT BLANK Copyright ASME International Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS Not for Resale ASME B107.300-2010 (Incorporation of ASME B107.14, B107.28, and B107.29) `,,```,,,,````-`-`,,`,,`,`,,` - Torque Instruments A N A M E R I C A N N AT I O N A L S TA N D A R D Copyright ASME International Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS Not for Resale Date of Issuance: April 19, 2010 This Standard will be revised when the Society approves the issuance of a new edition There will be no addenda issued to this edition ASME issues written replies to inquiries concerning interpretations of technical aspects of this Standard Periodically certain actions of the ASME B107 Committee may be published as Cases Cases and interpretations are published on the ASME Web site under the Committee Pages at http://cstools.asme.org as they are issued This code or standard was developed under procedures accredited as meeting the criteria for American National Standards The Standards Committee that approved the code or standard was balanced to assure that individuals from competent and concerned interests have had an opportunity to participate The proposed code or standard was made available 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 position with respect to the validity of any patent rights asserted in connection with any items mentioned in this document, and does not undertake to insure anyone utilizing a standard against liability for infringement of any applicable letters patent, nor assume any such liability Users of a code or standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, is entirely their own responsibility Participation by federal agency representative(s) or person(s) affiliated with industry is not to be interpreted as government or industry endorsement of this code or standard ASME accepts responsibility for only those interpretations of this document issued in accordance with the established ASME 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 otherwise, without the prior written permission of the publisher The American Society of Mechanical Engineers Three Park Avenue, New York, NY 10016-5990 Copyright © 2010 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All rights reserved Printed in U.S.A Copyright ASME International Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS Not for Resale `,,```,,,,````-`-`,,`,,`,`,,` - ASME is the registered trademark of The American Society of Mechanical Engineers CONTENTS Foreword Committee Roster Correspondence With the B107 Committee iv v vi ASME B107.14 Hand Torque Tools (Mechanical) ASME B107.28 Electronic Torque Instruments 13 ASME B107.29 Electronic Tester, Hand Torque Tools 17 Nonmandatory Appendix A Tables 21 `,,```,,,,````-`-`,,`,,`,`,,` - iii Copyright ASME International Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS Not for Resale FOREWORD The American National Standards Committee B107 on Socket Wrenches and Drives was originally under the sponsorship of The American Society of Mechanical Engineers (ASME) It was subsequently reorganized as an ASME Standards Committee and its title was changed to Hand Tools and Accessories In 1996, the Committee’s scope was expanded to include safety considerations The purpose of B107.300 is to define essential performance and safety requirements for the following three types of torque instruments: (a) manually operated torque instruments, commonly used for mechanical measurement of torque for control of the tightness of threaded fasteners (b) electronic torque testers used for checking manually operated hand-held torque wrenches and screwdrivers (c) manually operated electronic torque instruments with integral or interchangeable heads It includes requirements for endurance, torque value ranges, and accuracy for these torque instruments It specifies test methods to evaluate performance related to the defined requirements and safety, and indicates limitations of safe use This Standard may also be used as a guide by state authorities or other regulatory bodies in the formulation of laws or regulations It is also intended for voluntary use by establishments that use or manufacture the instruments covered This Standard includes (a) B107.14, Hand Torque Tools (Mechanical), approved by the American National Standards Institute on December 16, 2004 (b) B107.28, Electronic Torque Instruments, approved by the American National Standards Institute on March 14, 2005 (c) B107.29, Electronic Tester, Hand Torque Tools, approved by the American National Standards Institute on March 16, 2005 Prior editions of these individual standards are obsolete and no longer available In addition to the consolidation of these individual torque standards into this Standard, principal changes are the uniform inclusion of performance requirements and test methods that evaluate both 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 Instruments Standards Committee through their knowledge 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 & Standards Writing Guide 2000 Requests for interpretations of the technical requirements of this Standard should be expressed in writing to the Secretary, B107 Committee, at the address below Suggestions for the improvement of this Standard are welcome They should be addressed to the Secretary, ASME B107 Standards Committee, Three Park Avenue, New York, NY 10016-5990 The requirements of this Standard become effective at the time of publication ASME B107.300-2010 was approved by the B107 Standards Committee on September 8, 2009 and by the Board on Standards and Testing on October 12, 2009 It was approved as an American National Standard on February 18, 2010 `,,```,,,,````-`-`,,`,,`,`,,` - iv Copyright ASME International Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS Not for Resale ASME B107 COMMITTEE Hand Tools and Accessories (The following is the roster of the Committee at the time of approval of this Standard.) STANDARDS COMMITTEE OFFICERS W T Pagac, Chair D S McKittrick, Vice Chair J H Karian, Secretary STANDARDS COMMITTEE PERSONNEL N C Cantlon, Jore Corp J D Davidson, Sears Holdings Corp J Apida, Alternate, Sears Holdings Corp P A Desmarais, Danaher Tool Group D M Eggert, Snap-On, Inc J S Foote, Trade Association Management, Inc J H Karian, The American Society of Mechanical Engineers D S McKittrick, McKittrick G E Olson, Gene Olson Engineering Consultant, Ltd W T Pagac, Forever Associates W C Snyder, Wright Tool Co J M Ster, General Services Administration, Heartland Global Supply J F Chaney, Alternate, General Services Administration, Heartland Global Supply SUBCOMMITTEE — TORQUE INSTRUMENTS `,,```,,,,````-`-`,,`,,`,`,,` - J S Foote, Chair, Trade Association Management, Inc J F Chaney, General Services Administration, Heartland Global Supply J R Reynertson, Sturtevant Richmont Division, Ryerson Corp v Copyright ASME International Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS Not for Resale CORRESPONDENCE WITH THE B107 COMMITTEE General ASME Standards are developed and maintained with the intent to represent the consensus of concerned interests As such, users of this Standard may interact with the Committee by requesting interpretations, proposing revisions, and attending committee meetings Correspondence should be addressed to: Secretary, B107 Standards Committee The American Society of Mechanical Engineers Three Park Avenue New York, NY 10016-5990 http://go.asme.org/Inquiry Proposing Revisions Revisions are made periodically to the Standard to incorporate changes that appear necessary or desirable, as demonstrated by the experience gained from the application of the Standard Approved revisions will be published periodically The Committee welcomes proposals for revisions to this Standard Such proposals should be as specific as possible, citing the paragraph number(s), the proposed wording, and a detailed description of the reasons for the proposal, including any pertinent documentation Proposing a Case Cases may be issued for the purpose of providing alternative rules when justified, to permit early implementation of an approved revision when the need is urgent, or to provide rules not covered by existing provisions Cases are effective immediately upon ASME approval and shall be posted on the ASME Committee Web page Requests for Cases shall provide a Statement of Need and Background Information The request should identify the standard, the paragraph, figure or table number(s), and be written as a Question and Reply in the same format as existing Cases Requests for Cases should also indicate the applicable edition(s) of the standard to which the proposed Case applies Interpretations Upon request, the B107 Committee will render an interpretation of any requirement of the Standard Interpretations can only be rendered in response to a written request sent to the Secretary of the B107 Standards Committee The request for interpretation should be clear and unambiguous It is further recommended that the inquirer submit his/her request in the following format: Subject: Edition: Question: Cite the applicable paragraph number(s) and the topic of the inquiry Cite the applicable edition of the Standard for which the interpretation is being requested Phrase the question as a request for an interpretation of a specific requirement suitable for general understanding and use, not as a request for an approval of a proprietary design or situation The inquirer may also include any plans or drawings that are necessary to explain the question; however, they should not contain proprietary names or information Requests that are not in this format will be rewritten in this format by the Committee prior to being answered, which may inadvertently change the intent of the original request ASME procedures provide for reconsideration of any interpretation when or if additional information that might affect an interpretation is available Further, persons aggrieved by an interpretation may appeal to the cognizant ASME Committee or Subcommittee ASME does not “approve,” “certify,” “rate,” or “endorse” any item, construction, proprietary device, or activity Attending Committee Meetings The B107 Committee regularly holds meetings, which are open to the public Persons wishing to attend any meeting should contact the Secretary of the B107 Standards Committee `,,```,,,,````-`-`,,`,,`,`,,` - Copyright ASME International Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS vi Not for Resale ASME B107.300-2010 (B107.14) ASME B107.14 Scope 2 Classification References Definitions Requirements Tests Safety Requirements and Limitations of Use 10 Figures Type I, Class A Type I, Class B Type I, Class C Type I, Class D Type I, Class E, Style Type I, Class E, Style Type II, Class A, Style Type II, Class A, Style (Shown Without Interchangeable Head) Type II, Class B, Style 10 Type II, Class B, Style (Shown Without Interchangeable Head) 11 Type II, Classes A and B, Style (Shown With Interchangeable Head) 12 Flexible Head 13 Type III, Class A, Style 1, Design A 14 Type III, Class A, Style 1, Design B 15 Type III, Class A, Style 2, Design A 16 Type III, Class A, Style 2, Design B 17 Type III, Class B 18 Gravity-Independent Test Position 19 Graduated Range 20 Gravity-Dependent Test Positions 21 Accuracy Test Flowchart 3 4 5 5 5 6 6 10 11 Tables Torque Torque Torque Torque Instrument Instrument Instrument Instrument Capacity Increments Accuracy Operating Load `,,```,,,,````-`-`,,`,,`,`,,` - Copyright ASME International Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS Not for Resale 8 ASME B107.300-2010 (B107.14) HAND TORQUE TOOLS (MECHANICAL) SCOPE Design B: clockwise torquing Design C: counterclockwise torquing Style 3: interchangeable head connection Design A: clockwise (right-hand) and clockwise (left-hand) torquing Design B: clockwise torquing Design C: counterclockwise torquing Style 4: flexible ratchet head Design A: clockwise (right-hand) and clockwise (left-hand) torquing Design B: clockwise torquing Design C: counterclockwise torquing Class B: nongraduated Style 1: nonratcheting Design A: clockwise (right-hand) and clockwise (left-hand) torquing Design B: clockwise torquing Design C: counterclockwise torquing Style 2: standard ratcheting head Design A: clockwise (right-hand) and clockwise (left-hand) torquing Design B: clockwise torquing Design C: counterclockwise torquing Style 3: interchangeable head connection Design A: clockwise (right-hand) and clockwise (left-hand) torquing Design B: clockwise torquing Design C: counterclockwise torquing Style 4: flexible ratchet head Design A: clockwise (right-hand) and clockwise (left-hand) torquing Design B: clockwise torquing Design C: counterclockwise torquing This Standard provides performance and safety requirements for manually operated torque instruments, commonly used for mechanical measurement of torque for control of the tightness of threaded fasteners It is not intended to describe products infrequently utilized or those designed for special purposes This Standard may be used as a guide by state authorities or other regulatory bodies in the formulation of laws or regulations It is also intended for voluntary use by establishments that use or manufacture the instruments covered CLASSIFICATION 2.1 Type I: Indicating Class A: deflecting beam Style 1: plain scale Style 2: scale with signal mechanism Style 3: scale with memory indicator Class B: deflecting beam with interchangeable head connection Style 1: plain scale Style 2: scale with signal mechanism Style 3: scale with memory indicator Class C: rigid housing Style 1: plain scale Style 2: scale with signal mechanism Style 3: scale with memory indicator Class D: rigid housing with interchangeable head connection Style 1: plain scale Style 2: scale with signal mechanism Style 3: scale with memory indicator Class E: screwdriver grip Style 1: enclosed dial Style 2: exposed dial 2.3 Type III: Limiting Class A: screwdriver grip Style 1: graduated Design A: external square drive Design B: internal hex drive Style 2: nongraduated Design A: external square drive Design B: internal hex dive Class B: “T” handle grip Style 1: nonratcheting Style 2: ratcheting `,,```,,,,````-`-`,,`,,`,`,,` - 2.2 Type II: Setting Class A: graduated Style 1: nonratcheting Design A: clockwise (right-hand) and counterclockwise (left-hand) torquing Design B: clockwise torquing Design C: counterclockwise torquing Style 2: ratcheting Design A: clockwise (right-hand) and counterclockwise (left-hand) torquing Copyright ASME International Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS Not for Resale counter- counter- counter- counter- counter- counter- ASME B107.300-2010 (B107.14) Fig 20 Gravity-Dependent Test Positions Load Load Load (a) Gravity and force in the same direction Up (b) Gravity and force in opposing directions Load at the lowest test point specified in para 6.3(b) The instrument shall meet the accuracy requirements specified below with the instrument oriented in each position shown in Fig 20 Instruments shall operate within the accuracy limits in para 5.8 in any orientation with respect to gravity except that the allowable increase in accuracy percentage due to orientation influenced by gravity shall be limited to 2% of set torque when the rated capacity of the instrument is under 251 lbf-in (32.6 N·m) or over 250 lbf-ft (339 N·m) Flexible head instruments shall be tested in the unflexed position para 6.3, and shall be rejected if the tests are not satisfactorily completed If the instrument passes the above tests, it shall then be loaded to 50% of rated capacity and completely relieved 20,000 times in each calibrated direction of operation Accurate performance shall not be required at the conclusion of this test, but deformation or physical failure shall be cause for rejection 6.6 Flexible Head Error Test This test shall be conducted on Type II, Class A, Style instruments after the gravity error test The instrument shall be tested in accordance with para 6.3, but with the body of the instrument at the maximum flexed angles The accuracy of the instrument shall be within the limits in Table 6.5 Calibration Life and Overload The calibration life tests shall be performed after the accuracy test has been satisfactorily completed The torque instrument shall be loaded to rated capacity and completely relieved 5,000 times in each calibrated direction of operation at the rate of 60 cycles per minute or less Types I and II instruments shall then be loaded once to 125% of rated capacity in each calibrated direction of operation Type II, Style instruments shall be loaded in the maximum flexed position The instrument shall be examined for physical failure and shall be rejected if evidence of physical failure is found The instrument shall then be subjected to the requirements of para 5.8 and the test procedure of SAFETY REQUIREMENTS AND LIMITATIONS OF USE (a) Instructors and employers shall stress proper use and safety in the use of torque instruments, information about which can be found in the HTI publication, Guide to Hand Tools—Selection, Safety Tips, Proper Use and Care (b) Torque instruments shall be supplied with instructions indicating their accuracy limits, direction of operation, application, use, care, and guidance on the proper use of adapters and extensions The instructions shall 10 Copyright ASME International Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS Not for Resale `,,```,,,,````-`-`,,`,,`,`,,` - Up Copyright ASME International Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS Apply 100% graduated value or MIC to instrument three times 11 Not for Resale Load instrument six times at 20% of MIC Record last three readings Load instrument six times at 20% of MIC Record last three readings Load instrument six times at LGV Record last three readings Load instrument six times at 20% of MIC Record last three readings Type II Class B Set instrument to 20% of MIC Type III Class A Style I Set instrument to LGV [Note (3)] Type III Class A Style or Class B Set instrument to 20% of MIC [Note (3)] Load instrument six times at 20% of MIC Record last three readings Type II Class A Set instrument to 20% of MIC Type I Zero indicator or Pointer [Note (2)] Load instrument six times at 60% of MIC setting Record last three readings Load instrument six times at 60% of MIC Record last three readings Load instrument six times at 60% of MIC Record last three readings NOTES: (1) From B107.29, para 6.1.2 (2) If instrument is Type I, Style 2, set signal mechanism to test point value prior to testing each point (3) Type III wrenches are tested in clockwise direction only LGV = lowest graduated value MIC = maximum instrument capacity Zero tester Tester preparation [Note (1)] Apply rated capacity loads in direction of test three times Start Accuracy Test Flowchart `,,```,,,,````-`-`,,`,,`,`,,` - Fig 21 Load instrument six times at 100% of MIC Record last three readings Load instrument six times at 100% of MIC setting Record last three readings Load instrument six times at 100% of MIC Record last three readings Load instrument six times at 100% of MIC setting Record last three readings Load instrument six times at 100% of MIC Record last three readings Accuracy Test complete Compare recorded test results toTable for instrument type and make compliance decision No Is instrument Design A? Yes Yes CW and CCW both tested? No Repeat Accuracy Test in opposite direction ASME B107.300-2010 (B107.14) ASME B107.300-2010 (B107.14) indicate the extent to which design features of the instrument, such as flexible or interchangeable heads, affect the accuracy of the instrument (c) Torque instruments perform correctly only when properly used, cared for, and calibrated (d) A fastener improperly torqued with a torque instrument may be very dangerous even if the torque wrench is in proper working order, or appears to be in proper working order but is out of calibration (e) The failure to follow manufacturer instructions [see para 7(b)] for the use of these instruments is far more serious than with most hand tools For most hand tools, improper use will harm only the user, but improper use of a torque instrument could lead to systemic failure `,,```,,,,````-`-`,,`,,`,`,,` - 12 Copyright ASME International Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS Not for Resale