Micrometers

AN A MERICAN NA TIONAL S T AND ARD

ASME B89.1.13-2013

[Revision of ASME B89.1.13-2001 (R2006)]

ASME B89.1.13-2013

[Revision of ASME B89.1.13-2001 (R2006)]

Micrometers

AN AMERICAN NA TIONAL S T AND ARD

Two Park Avenue • New York, NY • 10016 USA

Date of Issuance: September 30, 2013

This Standard will be revised when the Society approves the issuance of a new edition.

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Copyright © 2013 by

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CONTENTS

Foreword iv

Committee Roster v

Correspondence With the B89 Committee vi

iii

FOREWORD

ASME Standards Committee B89 on Dimensional Metrology, under procedures approved by the American National Standards Institute (ANSI), has the responsibility of preparing standards that encompass the inspection and the means of measuring characteristics of various geometrical parameters, such as diameter, length, flatness, parallelism, concentricity, taper, and squareness. Since micrometers are widely used for the measurement and comparison of some of these features, the B89 Consensus Committee authorized formation of Project Team B89.1.13 to prepare this Standard.

This Standard is a revision of the first edition, ASME B89.1.13-2001. The 2001 edition was based in part on Federal Specification GGG-C-105C, published by the General Services Administration (GSA), as well as manufacturer’s current practices and technologies. In 2010, the International Organization for Standardization (ISO) published a revision of ISO 3611, the ISO standard for outside micrometers. The goal of this revision to ASME B89.1.13 is to bring some harmonization between these ISO and ASME standards while not changing the fundamental concepts of ASME B89.1.13-2001. In particular, the terminology and definitions associated with specifications and testing methods have been harmonized. In addition, this revision has been updated with many of the concepts developed and standardized by the ASME B89.7 subcommittee.

This Standard was approved by the American National Standards Institute on February 20, 2013.

iv

ASME B89 COMMITTEE

Dimensional Metrology

(The following is the roster of the Committee at the time of approval of this Standard.)

STANDARDS COMMITTEE OFFICERS

B. Parry, Chair

1. D. Phillips, Vice Chair

   F. Constantino, Secretary

   
   

   
   

2. Charlton, Jr., Charlton Associates

1. J. Christy, Mahr Federal, Inc.

   STANDARDS COMMITTEE PERSONNEL

2. P. Morse, University of North Carolina at Charlotte

   B. Parry, The Boeing Co.

3. Constantino, The American Society of Mechanical Engineers

4. A. Hetland, International Institute of Geometric Dimensioning and Tolerancing

M. P. Krystek, Physikalisch-Technische Bundesanstalt

M. Liebers, Professional Instruments Co.

P. Pereira, Caterpillar, Inc.

S. D. Phillips, National Institute of Standards and Technology

J. G. Salsbury, Mitutoyo America Corp.

D. Sawyer, National Institute of Standards and Technology

R. L. Thompson, U.S. Air Force

SUBCOMMITTEE 1 — LENGTH

D. Sawyer, Chair, National Institute of Standards and Technology

C. J. Blackburn, National Institute of Standards and Technology

M. Braine, National Institute of Standards and Technology

D. Carlson, L.S. Starrett Co.

D. J. Christy, Mahr Federal, Inc.

T. D. Doiron, National Institute of Standards and Technology

D. T. Harris, Glastonbury Southern Gage

K. Kokal, Micro Laboratories, Inc.

E. P. Morse, University of North Carolina at Charlotte

J. G. Salsbury, Mitutoyo America Corp.

E. S. Stanfield, National Institute of Standards and Technology

W. A. Watts, Glastonbury Southern Gage

J. G. Salsbury, Chair, Mitutoyo America Corp.

E. W. Blackwood, The Boeing Co.

D. Carlson, L.S. Starrett Co.

K. W. John, U.S. Air Force

K. Kokal, Micro Laboratories, Inc.

A. Kumar, Mitutoyo America Corp.

W. C. Lehmus, Diamond Technical Services, Inc.

PROJECT TEAM 1.13 — MICROMETERS

B. Parry, The Boeing Co.

P. Pereira, Caterpillar, Inc.

S. Ramsdale, Honeywell Federal Manufacturing & Technologies, LLC

D. Sawyer, National Institute of Standards and Technology

K. Skinner, U.S. Air Force

R. L. Thompson, U.S. Air Force

v

CORRESPONDENCE WITH THE B89 COMMITTEE

General. ASME Codes and 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 meet- ings. Correspondence should be addressed to:

Secretary, B89 Standards Committee

The American Society of Mechanical Engineers Two Park Avenue

New York, NY 10016 https://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.

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Edition: Cite the applicable edition of the standard for which the interpretation is being requested.

Question: 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.

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the B89 Standards Committee.

vi

ASME B89.1.13-2013

MICROMETERS

1. SCOPE

   This Standard is intended to provide the essential requirements for micrometers as a basis for mutual understanding between manufacturers and consumers. Outside, inside, and depth micrometers are described in the Standard.

   
   

2. DEFINITIONS

   backlash: a relative movement between interacting mechanical parts, resulting from looseness. (ASME B5.54-2005) In this Standard, backlash is further defined as the rotation of the spindle, in the opposite direction of the initial reading, before spindle moves in a linear direction. This condition is typically caused by looseness of fit between the lead screw and adjusting nut.

   end shake: the amount of spindle movement when an axial force is applied in the direction of the spindle, alternating towards the anvil and away from the anvil, without rotating the spindle.

   error of indication: for a measuring instrument, difference between an instrument indication and the quantity being measured.

   NOTE: The error of indication can be written as E p R − R0, where R is the indication and R0 denotes the indication of an ideal measuring instrument measuring the same measurand. In the testing and verification of a measuring instrument, the error of indication is typically evaluated by measuring a calibrated refer- ence standard. (Adapted from JCGM 106:2012)

   flatness: the condition of a surface or derived median plane having all elements in one plane.

   NOTE: A flatness tolerance specifies a tolerance zone defined by two parallel planes within which the surface or derived median plane must lie. (ASME Y14.5M-2009)

   full measuring face contact: contact between the full area of the measuring face and a feature of a workpiece. (ISO 3611:2010)

   maximum permissible error (of indication) (MPE): for a mea- suring instrument, maximum difference, permitted by specifications or regulations, between the instrument indication and the quantity being measured. (JCGM 106:2012)

   partial measuring face contact: contact between a partial area of the measuring face and a feature of a workpiece. (ISO 3611:2010)

   side shake: the amount of spindle side movement when a force is applied perpendicularly to the measuring end

   of the spindle, alternating from side to side, without rotating the spindle.

   tolerance limit: specified upper or lower bound of permis- sible values of a property. (JCGM 106:2012)

3. REFERENCES

ASME B5.54-2005, Methods for Performance Evaluation of Computer Numerically Controlled Machining Centers

ASME B46.1-2009, Surface Texture (Surface Roughness, Waviness, and Lay)

ASME B89.1.9-2002, Gage Blocks

ASME B89.6.2-1973 (R2012), Temperature and Humidity Environment for Dimensional Measurement

ASME B89.7.3.1-2001, Guidelines for Decision Rules: Considering Measurement Uncertainty in Determining Conformance to Specifications

ASME B89.7.3.2-2007, Guidelines for the Evaluation of Dimensional Measurement Uncertainty

ASME B89.7.5-2006, Metrological Traceability of Dimensional Measurements to the SI Unit of Length

ASME Y14.5-2009, Dimensioning and Tolerancing

Publisher: The American Society of Mechanical Engineers (ASME), Two Park Avenue, New York, NY 10016-5990; Order Department: 22 Law Drive, P.O. Box 2900, Fairfield, NJ 07007-2900 (www.asme.org)

ASTM E18-08, Standard Test Methods for Rockwell Hardness of Metallic Materials

IEEE/ASTM SI 10-2010, American National Standard for Metric Practice

Publisher: American Society for Testing and Materials (ASTM International), 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959 (www.astm.org)

ISO 1:2002, Geometrical Product Specifications (GPS) — Standard reference temperature for geometrical prod- uct specification and verification

ISO 3611:2010, Geometrical product specifications (GPS) — Dimensional measuring equipment: Micrometers for external measurements — Design and metrological characteristics

Publisher: International Organization for Standardiza- tion (ISO) Central Secretariat, 1, ch. de la Voie-Creuse, Case postale 56, CH-1211 Gene`ve 20, Switzerland/ Suisse (www.iso.org)

JCGM 100:2008, Evaluation of measurement data — Guide to the expression of uncertainty in measure- ment (GUM)

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