Description of products TECHNICAL INFORMATION 1.  Terminology of Taps Technical-1 18.Bar diameter of external threads Technical-57 Technical-2 (for thread rolling dies) 2.  Flutes 19.Surface Treatment Technical-58 3.  Edge angle and Cutting allowance of taps Technical-3 20.Carbide Taps Technical-61 4.  Recommended Tapping Speeds Technical-4 21.Taps for Pipe Threads Technical-63 5.  Tapping speed and Revolution Speed Technical-5 22.Features of MC-Helical Thread Mills Technical-72 6.  Tapping Torque Technical-6 23.Selecting different tap holder combinations Technical-79 7.  Metric Thread and Gauge Profile Technical-9 by machine feed system 8.  Length of engagement Technical-11 24.The mechanism for a tap to cut oversize Technical-81 9.  Classes of Internal Threads and on an internal thread Technical-13 Classes of Taps 25.Trouble Shooting Technical-83 10. About UNJ Threads Technical-18 Technical-87 26.Center Drills 11.C lass of external threads and Technical-19 27.Table of recommend centering condition Technical-88 class of Dies Technical-90 28.Thread Series 12.Guide to Thread Forming Taps (Roll Taps) Technical-20 29.Basic profile of threads Technical-92 13.How to set the tap's oversize to meet with Technical-22 the coating margin of internal threads 30.List of Thread Standards and Nominal Technical-95 Diameter Ranges of YAMAWA Taps 14.Tap, Thread Limits Technical-23 31.Cross chart of thread cutting tool standard Technical-98 15.Bored hole size before tapping Technical-36 32.Hardness conversion table Technical-99 ( for thread cutting ) 16.Bored hole size before tapping 33.Conversion table from inch to millimeter Technical-100 Technical-48 ( for thread forming ) 34.Chemical Component table of work Technical-101 17.Bar diameter for external threads materials Technical-50 (for cutting type dies) 35.Materials used for Cutting Tools Technical-111 Information Technical Technical-1005 For improvement, spec may change without advance notice.