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, Spiralpoint only, no straight flutes. Applicable Section(s): 3.1, 3.4 and 3.5, 3.2, 3.3. Type: Pipe, taper thread; Table 7, Pipe, straight thread; Table 8, Pulley; Table 5, Screw thread insert; Table 2B, Thread forming; Table 2 and 2A. Style: Straight fluted, Straight lobes and Spiral lobes. Applicable Section(s): 3.8, 3.7, 3.1, and 3.6. The following is a list of publications referencedin this Standard. ANSI B1.18M, Metric Screw Threads for Commercial Mechanical Fasteners - Boundary Profile Defined; ANSI B1.20.3, Dryseal Pipe Threads (Inch); ANSI/ASME B1.7M, Nomenclature, Definitions, and Letter Symbols for Screw Threads; ANSI/ASME B1.20.1, Pipe Threads, General Purpose (Inch); ASME B1.1, Unified Inch Screw Threads (UN and UNR Thread Form); ASME B1.12, Class 5 Interference-FitThread; ASME B1.13M, Metric Screw Threads - M Profile; ASME B1.15, Unified Inch Screw Threads (UNJ Thread Form); ASME B1.20.7, Hose Coupling Screw Threads (Inch); ASME B1.21M, Metric Screw Threads: MJ Profile; ASME B1.30, Standard Practicefor Calculating and Rounding Dimensions; and ASME B18.29.1, Helical Coil Screw Thread Inserts - FreeRunning and Screw Locking (Inch). Publisher: The American Society of Mechanical Engineers (ASME), Three Park Avenue, New York, NY 10016-5990MIL-P-7105B, General Requirements for Pipe Threads, Taper, Aeronautical National Form, SymbolANPT; MIL-S-8879C, General Specification for ScrewThreads, Controlled Radius Root With Increased Minor Diameter; and MIL-T-21309EM Tools for Inserting and Extracting Helical Coil Wire Screw Thread Inserts. Publisher: National Technical Information Service (NTIS), 5285 Port Royal Road, Springfield, VA 22161
ASME B94.9-1999 history
0000 ASME B94.9-2008(R2023)
0000 ASME B94.9-2008(R2018)
0000 ASME B94.9-2008(R2013)
2008ASME B94.9-2008 Taps: Ground Thread with Cut Thread Appendix (Inch and Metric Sizes)
1999ASME B94.9-1999 Taps - Ground and cut threads (inch and metric sizes)