Machining > Threading > Taps > Metric - Hand Taps | Bordo Metric Coarse Bottoming HSS Hand and Machine Tap | Bordo Metric Coarse Bottoming HSS Hand and Machine Tap | HSS Metric Coarse Bottoming Hand and Machine Tap. | Metric Coarse angle of thread is 60 degrees. | The crest is flat and the thread has clearance at the root allowing external thread and internal thread to engage well. | Larger root radius and lower thread height enable easy screw thread processing and increase thread screw strength. | The major diameter of external thread and pitch are specified by a simple numerical value (most commonly measured in millimetres). | Bottoming Taps have a lead of two threads and are used to ensure minimum thread run-out when tapping to the bottom of a blind hole. | Bottoming Taps are typically preceded by the use of a Taper or Intermediate Tap. | Manufactured from HSS this general purpose tap is designed for use in medium tensile materials and is for hand or general machine use. | About Bottoming Taps | Bottoming Taps have a lead of two threads and are used to ensure minimum thread run-out when tapping to the bottom of a blind hole. | Bottoming Taps are typically preceded by the use of a Taper or Intermediate Tap. | About Metric Coarse & Fine | Angle of the thread is 60. | The crest is flat and the thread has clearance at the root allowing external thread and internal thread to engage well. | A larger root radius and lower thread height enable easy screw thread processing and increase thread screw strength. | The major diameter of the external thread and pitch are specified by a simple numerical value (most commonly measured in millimeters).