ASME B94.9 2008 R2013
$98.04
ASME B94.9 Taps: Ground Thread with Cut Thread Appendix (Inch and Metric Sizes) – Reaffirmed 2013
| Published By | Publication Date | Number of Pages |
| ASME | 2008 | 92 |
This Standard covers various designs of standard taps, nomenclature and definitions; the standard system of marking; and dimensions and tolerance tables for the following types and styles of taps: Type: Standard straight thread, general purpose; Tables 2 and 2A. Style: Straight fluted, Spiral fluted, Spiral point, with Straight flutes, Spiral point only, no Straight flutes. Applicable Sections(s): 3.1, 3.4 and 3.5, 3.2, 3.3. Type: Pipe, taper thread; Table 7, Pipe, Straight fluted. Applicable Section(s) 3.8; Table 8, Pulley; Table 5, Screw thread insert; Table 2B, Thread forming: Tables 2 and 2A. Style: Straight fluted and Straight lobes. Applicable Sections(s): 3.7, 3.1 and 3.6.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 5 | TABLES |
| 7 | FOREWORD |
| 8 | COMMITTEE ROSTER |
| 9 | CORRESPONDENCE WITH THE B1 COMMITTEE |
| 11 | 1 GENERAL 1.1 Scope 1.2 Reference Standards for Screw Thread Nomenclature and Forms of Thread 1.3 Basic Form of Thread 1.4 Tap Pitch Diameter Size 2 TAP CATEGORIZATION |
| 12 | FIGURES Fig. 1 Illustrations of Terms Applying to Taps |
| 14 | 2.1 Type 2.2 Style 2.3 Size and Chamfer 2.4 Blank Design 3 TAP STYLES 3.1 Straight Flute Style Taps 3.2 Spiral Pointed Style Taps 3.3 Spiral Pointed Only Style Taps 3.4 Regular Spiral Fluted Style Taps 3.5 Fast Spiral Fluted Style Taps |
| 15 | Fig. 2 Straight Flute Style Taps Fig. 3 Spiral Pointed Style Taps Fig. 4 Spiral Pointed Only Style Taps Fig. 5 Regular Spiral Fluted Style Taps |
| 16 | 3.6 Thread Forming Type Taps 3.7 Pulley Type Taps 3.8 Pipe Type Taps Fig. 6 Fast Spiral Fluted Style Taps Fig. 7 Thread Forming Type Taps Fig. 8 Pulley Type Taps |
| 17 | 4 STANDARD SYSTEM OF TAP MARKING 4.1 Ground Thread Taps, Inch Screw Threads: UN Profile 4.2 Ground Thread Taps, Metric Screw Threads: M Profile 5 STANDARD SYSTEM OF TAP THREAD UNITS AND IDENTIFICATION, GROUND THREAD 5.1 Tap Thread Limits Unified Inch Screw Threads 5.1.1 H or L Limits. 5.1.1.1 Optional Marking. 5.1.2 Oversize or Undersize. Fig. 9 Pipe Type Taps |
| 18 | 5.1.3 Special Tap Pitch Diameter. 5.1.4 Left-Hand Taps. 5.2 Metric Screw Threads: M Profile 5.2.1 D or DU Limits. 5.2.1.1 Optional Marking. 5.2.2 Special Tap Pitch Diameter. 5.2.3 Left-Hand Taps. 5.2.4 Screw Thread Inserts STI. 6 GLOSSARY OF TAP ELEMENTS AND OTHER TERMS RELATED TO SCREW THREADS |
| 29 | Table 1 Thread Series Designations |
| 30 | Table 2 Standard Tap Dimensions |
| 33 | Table 3 Optional Neck and Optional Shortened Thread Length (Tap Dimensions) |
| 35 | Table 4 Standard Tap Dimensions [Screw Thread Inserts (STI): Machine Screw and Fractional Size, Taps] |
| 37 | Table 5 Standard Tap Dimensions [Screw Thread Inserts (STI), Metric Size Taps] |
| 39 | Table 6 Straight and Taper Pipe Taps |
| 41 | Table 7 Tap Thread Limits and Tolerances, Formulas for Unified Inch Screw Threads (Ground Thread) |
| 43 | Table 8 Standard Chamfers for Thread Cutting Taps |
| 44 | Table 9 Standard Entry Taper Lengths for Thread Forming Taps |
| 45 | Table 10 Tap Thread Limits and Tolerances, Formulas for Metric Threads (Ground Thread) |
| 47 | Table 11 Standard Number of Flutes |
| 49 | Table 12 Tap Thread Limits: Machine Screw Sizes, Ground Thread |
| 50 | Table 13 Tap Thread Limits: Fractional Sizes, Ground Thread |
| 52 | Table 14 Tap Thread Limits: Metric Sizes, Ground Thread |
| 54 | Table 15 Runout of Tap Elements |
| 55 | Table 16 Pulley Taps, Fractional Size (High-Speed Steel, Ground Thread) |
| 56 | Table 17 Taper Pipe Tap Thread Limits (Ground Thread; Ground Thread for NPT, NPTF, and ANPT) |
| 58 | Table 18 Straight Pipe Tap Thread Limits: NPSC/NPSM, Ground Thread [American National Standard Straight Pipe Thread Form (NPSC, NPSM)] |
| 59 | Table 19 Straight Pipe Tap Thread Limits: NPSF, Ground Thread [Dryseal American National Standard Straight Pipe Thread Form (NPSF)] |
| 60 | Table 20 Tap Thread Limits [Screw Thread Inserts (STI), Ground Thread, Machine Screw, and Fractional Size] |
| 62 | Table 21 Tap Thread Limits [Screw Thread Inserts (STI), Ground Thread, Metric Size (mm)] |
| 63 | NONMANDATORY APPENDICES A TAP SIZE RECOMMENDATIONS |
| 82 | B STANDARD SYSTEM OF TAP MARKING CUT THREAD TAPS |
| 87 | ERRATA to ASME B94.9-2008 Taps: Ground Thread With Cut Thread Appendix (Inch and Metric Sizes) |
| 88 | Fig. 6 Fast Spiral Fluted Style Taps |
| 89 | Table 10 Tap Thread Limits and Tolerances, Formulas for Metric Threads (Ground Thread) |
| 90 | Table 13 Tap Thread Limits: Fractional Sizes, Ground Thread (Unified and American National Thread Forms, Standard Thread Limits) (Cont’d) |
| 91 | Table A-1 Tap Size Recommendations for Classes 2B and 3B Unified Inch Screw Threads (Machine Screw and Fractional Sizes) |
| 92 | Table A-2 Tap Size Recommendations for Class 6H Metric Screw Threads |
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