ASME B1.2 1983 R2007
$98.04
ASME B1.2 Gages and Gaging for Unified Inch Screw Threads
| Published By | Publication Date | Number of Pages |
| ASME | 1983 | 196 |
This Standard provides essential specifications and dimensions for the gages used on Unified inch screw threads UN [unified] and UNR [external threads only] thread form, and covers the specifications and dimensions for the thread gages and measuring equipment listed in Tables 1 and 2. The basic purpose and use of each gage are also described.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 5 | Foreword |
| 7 | Standards Committee Roster |
| 11 | Contents |
| 12 | Figures |
| 13 | Tables |
| 14 | Appendices |
| 15 | 1 Introduction 1.1 References 1.2 Classification 1.3 Federal Government Use 2 Basic Principles 2.1 Accuracy in Gaging 2.2 Limitations of Gaging |
| 16 | 1 Screw Thread Gages and Measuring Equipment for External Product Thread Characteristics |
| 20 | 2 Screw Thread Gages and Measuring Equipment for Internal Product Thread Characteristics |
| 24 | 2.3 Determining Size of Gages 2.4 Standard Temperature 3 General Practice 3.1 General Design 3.2 Types of Gages 3.3 Interpretation of Tolerances 3.4 Direction of Tolerances on Gages |
| 25 | 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 4.1 GO Working Thread Plug Gages |
| 26 | 1 Maximum-Material GO Functional Limit |
| 27 | 4.2 NOT GO (HI) Thread Plug Gages 3 Recommended Widths for Chip Grooves |
| 28 | 4.3 Thread Snap Gages – GO Segments or Rolls 2 Partial End Threads and Chip Grooves |
| 29 | 4 Specifications and Format for Tables 10 and 11 – Limits of Size of Threaded and Plain Gages for Unified External and Internal Threads |
| 30 | 3 NOT GO (HI) Functional Diameter Limit |
| 31 | 5 Specifications and Format for Tables 10 and 11 – Limits of Size of Thread-Setting Gages for Unified Thread Working Gages |
| 32 | 6 X Gage Tolerances for Thread Gages |
| 33 | 4 Thread Snap Gages – Maximum-Material GO Functional Limit |
| 34 | 4.4 Thread Snap Gages – NOT GO (HI) Segments or Rolls 4.5 Thread Snap Gages – Minimum Material: Pitch Diameter Cone and Vee |
| 35 | 5 Thread Snap Gages – NOT GO (HI) Functional Diameter Limit |
| 36 | 6 Thread Snap Gages – Minimum-Material Pitch Diameter Limit – Cone and Vee |
| 37 | 4.6 Thread Snap Gages – Minimum Material: Thread Groove Diameter Type 7 Thread Snap Gages – Minimum-Material Thread Groove Diameter Limit |
| 38 | 4.7 Thread-Setting Solid Ring Gages 4.8 Plain Plug, Snap, and Indicating Gages to Check Minor Diameter of Internal Thread |
| 39 | 7 W Gage Tolerances for Thread Gages |
| 40 | 8 Thread Form of Solid Thread-Setting Ring Gages |
| 41 | 9 Minor Diameter Limit – Cylindrical Plug Gages |
| 42 | 4.9 Snap and Indicating Gages to Check Major Diameter of Internal Thread 4.10 Functional Indicating Thread Gages for Internal Thread 8 Gage Tolerances for Plain Cylindrical Gages |
| 43 | 10 Indicating Plain Diameter Gages – Max.-Min. Minor Diameter Limit and Size |
| 44 | 11 Snap and Indicating Diameter Gages – Max.-Min. Major Diameter Limit and Size |
| 45 | 12 Indicating Thread Gages – Maximum-Material GO Functional Limit and Size |
| 46 | 9 Constants for Computing Thread Gage Dimensions |
| 47 | 4.11 Minimum-Material Indicating Thread Gages for Internal Thread 4.12 Indicating Runout Thread Gage for Internal Thread |
| 48 | 13 Indicating Thread Gages – Minimum-Material Pitch Diameter Limit and Size – Cone and Vee |
| 49 | 14 Indicating Thread Gages – Minimum-Material Pitch Diameter Limit and Size – Ball and Radius |
| 50 | 15 Indicating Thread Gages – Diameter Runout – Minor to Pitch |
| 51 | 4.13 Differential Gaging |
| 52 | 16 Indicating Thread Gages – Differential Gaging |
| 53 | 4.14 Pitch Micrometers 4.15 Thread-Measuring Balls 4.16 Optical Comparator and Toolmaker’s Microscope 17 Inside Micrometer, Caliper Type |
| 54 | 4.17 Profile Tracing Instrument 4.18 Surface Roughness Equipment 4.19 Roundness Equipment 4.20 Miscellaneous Gages and Gaging Equipment 5 Types of Gages for Product External Thread 5.1 GO Working Thread Ring Gages |
| 55 | 10 Gages for Standard Thread Series, Classes 1A, 2A, 3A, 1B, 2B, and 3B Unified Screw Threads – Limits of Size |
| 97 | 11 Setting Gages for Standard Thread Series, Classes 1A, 2A, 3A, 1B, 2B, and 3B Unified Screw Threads – Limits of Size |
| 141 | 18 Maximum-Material GO Functional Limit |
| 142 | 5.2 NOT GO (LO) Thread Ring Gages |
| 143 | 5.3 Thread Snap Gages – GO Segments or Rolls 19 NOT GO (LO) Functional Diameter Limit |
| 144 | 20 Thread Snap Gages – Maximum-Material GO Functional Limit |
| 145 | 5.4 Thread Snap Gages – NOT GO (LO) Segments or Rolls |
| 146 | 21 Thread Snap Gages – NOT GO (LO) Functional Diameter Limit |
| 147 | 5.5 Thread Snap Gages – Cone and Vee 5.6 Thread Snap Gages – Minimum Material: Thread Groove Diameter Type 5.7 Plain Ring and Snap Gages to Check Major Diameter of Product External Threads |
| 148 | 22 Thread Snap Gages – Minimum-Material Pitch Diameter Limit – Cone and Vee |
| 149 | 5.8 Snap Gages for Minor Diameter of Product External Threads 5.9 Functional Indicating Thread Gages for External Thread 23 Thread Snap Gages – Minimum-Material Thread Groove Diameter Limit |
| 150 | 24 Major Diameter Limit |
| 151 | 25 Minor Diameter Limit Snap Type |
| 152 | 26 Indicating Thread Gages – Maximum-Material GO Functional Diameter Limit and Size |
| 153 | 5.10 Mimimum-Material Indicating Thread Gages for External Thread 5.11 Indicating Runout Gage for External Threads 5.12 Differential Gaging |
| 154 | 27 Indicating Thread Gages – Minimum-Material Pitch Diameter Limit and Size – Cone and Vee |
| 155 | 28 Indicating Thread Gages – Minimum-Material Thread Groove Diameter Limit and Size |
| 156 | 29 Indicating Thread Gages – Diameter Runout – Major to Pitch |
| 157 | 5.13 W Tolerance Thread-Setting Plug Gages |
| 158 | 30 Indicating Thread Gages – Differential Gaging |
| 160 | 31 Thread Form of Truncated Thread-Setting Plug Gages |
| 161 | 32 Thread Form of Full-Form Thread-Setting Plug Gages |
| 162 | 5.14 Plain Check Plug Gages for Thread Ring Gages 5.15 Indicating Plain Diameter Gages – Major Diameter of Product External Threads 5.16 Indicating Gages to Check Minor Diameter of External Thread |
| 163 | 33 Indicating Plain Diameter Gage – Max.-Min. Major Diameter Limit and Size |
| 164 | 34 Indicating Diameter Gages – Max.-Min. Minor Diameter Limit and Size |
| 165 | 12 Calibration Requirements and Standards for X Tolerance Thread Gages, Indicating Gages, Plain Gages, and Measuring Equipment for External Product Threads |
| 169 | 13 Calibration Requirements and Standards for X Tolerance Thread Gages, Indicating Gages, Plain Gages, and Measuring Equipment for Internal Product Threads |
| 173 | 5.17 Thread Micrometers 5.18 Thread-Measuring Wires 5.19 Optical Comparator and Toolmaker’s Microscope 14 Calibration Requirements for Thread- and Plain-Setting Gages |
| 174 | 5.20 Profile Tracing Instrument 5.21 Electromechanical Lead Tester 5.22 Helical Path Attachment Used With GO Type Thread Indicating Gage 5.23 Helical Path Analyzer 35 Indicating Gages – Helical Path Attachment Used With GO Type Indicating Gage |
| 175 | 5.24 Surface Roughness Equipment 5.25 Roundness Equipment 5.26 Miscellaneous Gages and Gaging Equipment |
| 177 | A Calibration and Inspection of Limit Gages, Snap Gages, Indicating Gages, and Measuring Instruments A1 General A2 Thread Plug Gage Calibration Tables |
| 178 | A3 Thread Ring Gage Inspection A1 Minimum Magnification |
| 179 | A2 60 deg. Included Thread Angle |
| 180 | A3 Lengths of AGD Taperlock and Trilock Thread Plug Gage Blanks Selected From ANSI B47.1 |
| 181 | A4 Plain Plug Gage Calibration |
| 182 | A5 Plain Ring Gage Calibration A6 Plain Snap Gages A7 Rolls With Zero Lead Thread Form Used on Snap and Indicating Gages A8 Inspecting Peripheral Contacting Segments Used on External Product Thread |
| 183 | A4 Lengths of AGD Thread Ring Gage Blanks and Total Thread Lengths of Standard Truncated-Setting Plug Gage Blanks Selected from ANSI B47.1 |
| 184 | A9 Inspection of Thread Contact Segments Used on Internal Product Thread A10 Check for Magnification Discrepancies Due to Indicating System Linkage A11 Calibration of Dial and Electronic Indicators |
| 185 | A12 Assessment of Surface Quality |
| 187 | B Metrology of 60 deg. Screw Threads B1 Wire Method of Measurement of Pitch Diameter (Thread Groove Diameter) B2 Size of Wires B3 Methods of Measuring Wires Considering the Effect of Deformation |
| 188 | B1 A Three-WIre Method of Measuring Pitch (Thread Groove) Diameter of Thread Plug Gages |
| 189 | B1 Thread-Measuring Wires for 60 deg. Screw Threads |
| 190 | B4 Methods of Measurement Using Wires B5 Standard Specification for Wires and Standard Practice in Measurement of Wires of 60 deg. Threads B2 Measuring Force for Over-Wire Measurements of External Pitch Diameter and Wire Calibration, and Cylindrical Diameter for Wire Calibration |
| 191 | B6 General Formula for Measurement of Pitch Diameter B7 Simplified Formula for Pitch Diameter |
| 192 | B8 Setting Measuring Instruments With Variable Measuring Force B9 Thread Balls |
| 193 | B10 Internal Pitch Diameter Measurement B3 Measuring Force Over Balls for Internal Pitch Diameter Measurement and Ball Calibration |
