Description
- 30 x 3.5mm HSS Cobalt MC Spiral Point Tap
- HSS-Co5 (Cobalt) Metric Coarse Spiral Point (Gun Nose) machine tap.
- Cobalt HSS taps are extremely hard and provide superior performance and increased tool life especially in stainless steel and high tensile steel.
- Gun nose taps have straight flutes supplemented by angular cutting faces at the lead.
- The design of the cutting portion propels the swarf ahead of the tap leaving the flutes clear for the flow of coolant to the cutting teeth.
- Primarily designed for use in through holes, these taps can be used in blind holes provided that there is ample clearance beyond the threaded section to accommodate the swarf.
- The advantages of a gun nose tap are the shearing action of the angular cutting faces, which produces a fine finish on the threads and shallower flutes. This allows a stronger cross section throughout the tap.
- Metric Coarse taps have a 60º angle of thread.
- 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 millimeters).
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