
Medium carbon steels High carbon steels
(m/min) (m/min)
towardsthetappingchuckandpreventschipsfromclogginginthehole. Thesetapsareidealforblindholetapping. ●Thesetapscuteasilyintosoftermaterials. ●Intermittentcuttingintopilotholeswithakeywayorgroovesispossible.
forhighhardnessmaterials. Chip evacuation with a SP tap.
| SP | Forlowspeedmachiningondrilling | +SP | Mediumspeedmachining/Synchronousfeed | ||
| machinesandmachiningcenters. | tappingisrecommendedonMachiningCenters. | ||||
| Standard tap series SP (for blind holes). | Plus series + SP for blind holes. |
| Old name | New Name Size Range | Old Name | New Name | Size Range | ||
| N-SP | SP M1.2〜M64 | N+SP | +SP | M2〜M12 | ||
| Effective tapping on drill machines. | Effective for use with synchronous feed (rigid) tapping | |||||
| on CNC machining centers. | ||||||
| * Both are general purpose spiral flute taps developed for varying tapping environments. | ||||||
| Speed chart |
| Slow | Tapping Speed | Fast | ||
| Hard | Hard |
5 m/min 10m/min 15m/min 20 m/min
Work Piece Material Perfect synchronous feed territory Work Piece Material
| Alloy | SCM | SCM | Alloy |
| Steel | SCr | SCr | Steel |
| High | S55C | S55C | High |
| Carbon | Carbon | ||
| Steel | S45C | S45C | Steel |
| S45C | S45C | ||
| Medium | Medium | ||
| Carbon | +SP | Carbon | |
| Steel | SP | Steel |
S30C S30C
S30C S30C Low Low Carbon Carbon Steel Steel SS400 SS400
5 m/min 10m/min 15m/min 20m/min
Tappingspeedrangebytapseries.