1、 AN AMERICAN NATIONAL STANDARD Gages and Gaging for Unified Inch Screw Threads ANWASME B1.Z1983 (REVISION OF ANSI B1.2-1974) SPONSORED AND PUBLISHED BY THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS United Engineering Center 345 East 47th Street New York, N. Y. 10017 This Standard will be revised when
2、 the Society approves the issuance of a new edition. There will be no addenda or written interpretations of the requirements of this Standard issued to this Edition. Date of Issuance: June 15, 1984 This code or standard was developed under procedures accredited as meeting the criteria for Ameri- can
3、 National Standards. The Consensus Committee that approved the code or standard was balanced to assure that individuals from competent and concerned interests have had an opportunity to partici- pate. The proposed code or standard was made available for public review and comment which pro- vides an
4、opportunity for additional public input from industn/, academia, regulatory agencies, and in 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 a
5、sserted in con- nection 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 lia- bility. Users of a code or standard are expressly advised that determination o
6、f the validity of any such patent rights, end the risk of infringement of such rights, is entirely their own responsibility. Participation by federal agency representativefs) or person(s) affiliated with industry is not to be in- terpreted as government or industry endorsement of this code or standa
7、rd. ASME does not accept any responsibility for interpretations of this document made by individual volunteers. 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. Copyright 0 1984 by THE AMERI
8、CAN SOCIETY OF MECHANICAL ENGINEERS All Rights Reserved Printed in U.S.A. FOREWORD (This Foreword is not part of American National Standard ANSVASME 61.2-l 983, Gages and Gaging for Unified Inch Screw Threads.) American National Standards Committee Bl for the Standardization of screw threads was org
9、anized in 1920 as Sectional Committee Bl under the aegis of the American Engi- neering Standards Committee (later the American National Standards Association, then the United States of America Standards Institute and, as of October 6, 1969, the American National Standards Institute, Inc.), with the
10、Society of Automotive Engineers and the American Society of Mechanical Engineers as joint sponsors. In 1982, American National Standards Committee Bl was reorganized as the ASME Standards Committee Bl, and since then it has operated under the American Society of Mechanical Engineers Procedures to pr
11、oduce and update standards which may become ANSI Standards after final approval by the American National Standards Institute. A declaration of accord with respect to the unification of screw threads was signed on November 18, 1948, by representatives of the services and industry of the United States
12、, the United Kingdom, and Canada. The ANSI Unified Screw Thread Standard B 1.1, through the quadripartite standardization agreement (QST AC) 247, Unified Threads, is subject to an international standardization agreement through the instrumentality of the American- British-Canadian-Australian Army St
13、andardization Program, which recognizes B 1.1 as a standard for Unified Threads when it is required to effect the interchangeability of parts and equipment between the armies of the participating nations. The first American National Standard for Screw Thread Gages and Gaging was pub- lished as ASA B
14、 1.2- 194 1 to supplement the parent Standard AS A B 1. l- 1935, Screw Threads for Bolts, Nuts, Machine Screws and Threaded Parts. That Standard was revised and re- published as a Unified Standard ASA Bl.l-1949 and again as ASA Bl.l-1960. The Uni- fled Gage Standard was republished as ASA B1.2-1951
15、and USA B1.2-1966. On February 9, 1973, a meeting was held by the Department of Commerce at the Na- tional Bureau of Standards, Washington, D.C., attended by representatives of government and industry screw thread interests. With the goal of eliminating parallel standards, those at the meeting recom
16、mended that the NBS Handbook H-28 be converted into a coordinat- ing document for government screw thread standards wherein sections of H-28 would be replaced by single page references to existing industry standards. It was further recom- mended that the chairman of American National Standards Commi
17、ttee B I set up a group to clearly define and establish identified levels of acceptability for screw threads. At an American National Standards Committee Bl meeting held on May 3, 1973, unani- mous approval was given to the following motion: “The Bl Committee recognizing the needs of industry for di
18、fferent levels of acceptability for screw threads, establishes new scopes for Standards B 1.1 and B 1.2 and sets up a new standard, B 1.3.” References to con- formance criteria were removed from ANSI B1.2-1974 and additional gages and gaging data were added to suit additional conformance requirement
19、s specified in ANSI B1.3 or other Bl thread documents. This new publication, designated ANSI/ASME B1.2-1983, has had considerable new material added to cover the many options of gages and measuring equipment shown in ANSI B 1.3, Screw Thread Gaging Systems for Dimensional Acceptability. It has also
20、re- . . . 111 applied HI and LO to function as NOT GO gages and has eliminated gages with pitch di- ameter outside product thread limits. ANSl B1.2 was approved by the ASME Standards Committee Bl on March 18, 1983. The proposed standard was submitted by the ASME Board of Standardization to the Ameri
21、can National Standards Institute. It was approved and formally designated an American National Standard on May 16, 1983. ASME STANDARDS COMMITTEE 61 Standardization and Unification of Screw Threads (The followmg is the roster of the Committee at the trme of approval of this Standard.) OFFICERS D. J.
22、 Emanuelli, Chairman H. W. Ellison, Vice Chairman C. E. Lynch, Secretary COMMITTEE PERSONNEL AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA, INC. G. G. Gerber, McDonnell Douglas, St. LOUIS, Missouri H. Borrman, Alternate, Sperry Gyroscope Division, Great Neck, New York AMERICAN IRON AND STEEL INSTITUTE
23、 F. Dallas, Jr., Sawhill Tubular Division, Sharon, Pennsylvania AMERICAN MEASURING TOOL MANUFACTURERS ASSOCIATION D. Dodge, Pennoyer-Dodge Company, Glendale, Californra C. W. Jatho, Alternate, Amerrcan Measurmg Tool Manufacturers Assocratron, Birmingham, Michigan AMERICAN PIPE FITTINGS ASSOCIATION W
24、. C. Farrell, Stockham Valves and Fittings, Birmingham, Alabama DEFENSE INDUSTRIAL SUPPLY CENTER E. Schwartz, Defense Industrial Supply Center, Philadelphia, Pennsylvania F. S. Ciccarone, Ahernate, Defense Industrial Supply Center, Philadelphra, Pennsylvania ENGINE MANUFACTURERS ASSOCIATION G. A. Ru
25、ss, Cummins Engine Company, Columbus, Indiana FARM AND INDUSTRIAL EQUIPMENT INSTITUTE J. F. Nagy, Ford Motor Company, Dearborn, Michigan INDUSTRIAL FASTENERS INSTITUTE R. B. Belford, Industrial Fasteners Institute, Cleveland, Ohio R. M. Harris, Bethlehem Steel Company, Lebanon, Pennsylvania K. E. Mc
26、Cullough, SPS Technologies, Inc., Jenkintown, Pennsylvania J. C. McMurray, Russell, Burdsall and Ward Inc., Mentor, Ohio J. A. Trilling, Holo-Krome Company, West Hartford, Connecticut E. D. Spengler, Alternate, Bethlehem Steel Company, Lebanon, Pennsylvania MANUFACTURERS STANDARDIZATION SOCIETY OF T
27、HE VALVE AND FITTING INDUSTRY W. C. Farrell, Stockham Valves and Fitting, Birmingham, Alabama METAL CUTTING TOOL INSTITUTE (TAP AND DIE DIVISION) N. F. Nau, Union/Butterfield, Athol, Massachusetts A. D. Shepherd, Jr., Alternate, Union/Butterfield, Derby Line, Vermont NATIONAL AUTOMATIC SPRINKLER AND
28、 FIRE CONTROL ASSOCIATION, INC. W. Testa, Grinnell Fire Protection Systems Company, Inc., Providence, Rhode Island R. P. Fleming, Akernate, National Automatic Sprinkler and Fire Control Association, Inc., Patterson, New York V NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION J. L. Griffin, Wheatland Tu
29、be Company, Wheatland, Pennsylvania J. B. Levy, General Electric Company, Schenectady, New York F. F. Weingruber, Westinghouse Electric Corp., Pittsburgh, Pennsylvania W. R. Williford, Alternate, National Electrical Manufacturers Association, Washington, D.C. NATIONAL MACHINE TOOL BUILDERS ASSOCIATI
30、ON R. J. Sabatos, The Cleveland Twist Drill Company, Cleveland, Ohio D. R. Stoner, Jr., Teledyne Landis Machine, Wayneshoro, Pennsylvania NATIONAL SCREW MACHINE PRODUCTS ASSOCIATION T. S. Meyer, Fischer Special Manufacturing Company, Cold Spring, Kentucky l-l. A. Eichstaedt, Alternate, National Scre
31、w Machine Products Association, Brecksville, Ohio SOCIETY OF AUTOMOTIVE ENGINEERS H. W. Ellisori, General Motors Technical Center, Warren. Michigan SOCIETY OF MANUFACTURING ENGINEERS D. Davidson, Morse/Hemco Corporation, Holland, Michigan TUBULAR RIVET AND MACHINE INSTITUTE R. M. Byrne, Industry Ser
32、vice Bureaus, Inc., White Plains, New York U.S. DEPARTMENT OF THE AIR FORCE R. P. Stewart, Wright-Patterson, Ohio U.S. DEPARTMENT OF THE ARMY F. J. Clas, U.S. Department of the Army, Watervliet, New York J. Crowley, U.S. Army Material Development and Readiness Command, Alexandria, Virginia F. L. Jon
33、es, Alternate, U.S. Army Missle Command, Redstone Arsenal, Alabama U.S. DEPARTMENT OF DEFENSE E. Schwartz, Defense Industrial Supply Center, Philadelphia, Pennsylvania U. S. DEPARTMENT OF THE NAVY C. T. Gustafson, Portsmouth Naval Shipyard, Portsmouth, New Hampshire INDIVIDUAL MEMBERS C. T. Appleton
34、, Jefferson, Massachusetts J. Boehnlein, PMC Industries, Wickliffe, Ohio R. Browning, Southern Gage Company, Erin. Tennessee R. S. Chamerda, The Johnson Gage Company, Bloomfield, Connecticut J. F. Cramer, Des Moines, Washington E. W. Drescher, Lancaster, Pennsylvania D. J. Emanuelli. Greenfield Tap
35、and Die, Greenfield. Massachusetts C. G. Erickson, Colt Industries - Sterling Die Operation, West Hartford, Connecticut S. I. Kanter, P.E., The Hanson-Whitney Company, Hartford, Connecticut R. W. Lamport, The Van Keuren Company, Watertown, Massachusetts A. R. Machell, Jr., Xerox Corp., Rochester, Ne
36、w York A. E. Masterson, Watervliet, New York R. E. Mazzara, Geometric Tool, New Haven, Connecticut P. V. Pastore, Regal Beloit Corp., South Beloit, Illinois M. M. Schuster, Hi-Shear Corporation, Torrance, California A. G. Strang. Boyds, Maryland A. F. Thibodeau, Swanson Tool Manufacturing, Inc., Wes
37、t Hartford, Connecticut J. W. Turton, The Bendix Corp., Greenfield, Massachusetts Subcommittee B1.2 - Screw Thread Gages and Gaging R. Browning, Chairman, Southern Gage Company, Erin, Tennessee A. F. Thibodeau, Secretary, Swanson Tool Manufacturing, Inc., West Hartford, Connecticut P. F. Bitters. Gr
38、eenfield Tap and Die, Greenfield, Massachusetts J. Boehnlein, PMC Industries, Wickliffe, Ohio vi D. Cadieux, Greenfield Tap and Die, Greenfield, Massachusetts R. S. Chamerda, The Johnson Gage Company, Bloomfield, Connecticut M. Davidson, Morse/Hemco Corp., Holland, Michigan D. Dodge, Pennoyer-Dodge
39、Company, Glendale, California H. W. Ellison, General Motors Technical Center, Warren, Michigan J. J. Fiscella, Latham, New York G. Garcina, Indianapolis, Indiana C. T. Gustafson, Metrology Laboratories Division, Portsmouth, New Hampshire S. I. Kanter, The Hanson-Whitney Company, Hartford, Connecticu
40、t R. W. Lamport, The Van Keuren Company, Watertown, Massachusetts A. E. Masterson, Watervliet, New York K. E. McCullough, SPS Technologies, Inc., Jenkintown, Pennsylvania J. C. McMurray, Russell, Burdsall and Ward, Inc., Mentor, Ohio J. Preziosi, Amerace-Esna Corp., Union, New Jersey M. M. Schuster,
41、 Hi-Shear Corp., Torrance, California E. Schwartz, Defense Industrial Supply Center, Philadelphia, Pennsylvania A. G. Strang, Boyds, Maryland J. W. Turton, The Bendix Corp., Greenfield, Massachusetts A. Zaverucha, McMellon Brothers, Stratford, Connecticut Task Group Bl .16 - Gages and Gaging for Met
42、ric M Screw Threads C. G. Erickson, Chairman, West Hartford, Connecticut R. Browning, Secretary, Southern Gage Company, Erin, Tennessee R. S. Chamerda, The Johnson Gage Company, Bloomfield, Connecticut M. Davidson, H. E. Morse Company, Holland, Michigan D. Emanuelli, Greenfield Tap and Die, Greenfie
43、ld, Massachusetts S. I. Kanter, The Hanson-Whitney Company, Hartford, Connecticut R. W. Lamport, The Van Keuren Company, Watertown, Massachusetts K. E. McCullough, SPS Technologies, Inc., Jenkintown. Pennsylvania J. C. McMurray, Russell, Burdsall, and Ward, Inc., Mentor, Ohio E. Schwartz, Defense In
44、dustrial Supply Center, Philadelphia, Pennsylvania A. G. Strang, Boyds, Maryland vii Intentionally left blank CONTENTS . Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Standards Committee Roster
45、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 References . . . . . . . . . . . . . . . .
46、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3 Federal Government Use . . . . . . . . . . . . . . . . . . . . . . .
47、 . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Basic Principles I 2.1 Accuracy in Gaging . I 2.2 Limitations ofGaging . 1 2.3 Determining Size of Gages . 10 2.4 Standard Temperature . 10 3 General Practice 3.1 General Design . 3.2 Types of Gages . 3.3 Interpretation of Tolerances 3.4 Directi
48、on of Tolerances on Gages . 3.5 Standard Thread Gage Tolerances . 3.6 Tolerance on Lead 3.7 Tolerances on Half-Angle 3.8 Check of Effect of Lead and Flank Angle Variations on Product Thread . 3.9 Calibration Requirements and Standards . 4 Types of Gages for Product Internal Thread . . . . . . . . .
49、. . . . . . . . . . . . . . . . . . . . . . . . . 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.10 4.11 4.12 4.13 GO Working Thread Plug Gages NOT GO (HI) Thread Plug Gages . Thread Snap Gages - GO Segments or Rolls Thread Snap Gages - NOT GO (HI) Segments or Rolls . Thread Snap Gages - Minimum Material: Pitch Diameter Cone and Vee . Thread Snap Gages - Minimum Material: Thread Groove Diameter Type Thread-Setting Solid Ring Gages Plain Plug, Snap, and Indicating Gages to Check Minor Diameter of InternalThread . Snap and Ind
