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| Through-coolant | no | |
| Cooling lubricant | yes | |
| Series | Pro Tap | |
| Manufacturer’s designation | HOLEX Pro Tap Maschinen-Gewindebohrer HSS-E Form C, TiN | |
| Interface position | on the machine; on the machine | |
| Holder type | plain shank; plain shank | |
| Holder shape | plain shank; plain shank | |
| Holder version | metric; metric | |
| Holder size, metric | 0070 mm; 0070 mm | |
| Holder tolerance class | h9; h9 | |
| Shank diameter | 7 mm; 7 mm | |
| Thread type | G | |
| Thread nominal diameter inch | 0.125 in | |
| Thread | G1/8 | |
| Thread pitch | 0.907 mm | |
| Turns per inch | 28 | |
| Chisel edge diameter | 8.8 mm | |
| Length of tapping part | 24.33 mm | |
| Taper lead angle | 12.18 degrees | |
| Number of teeth | 3 | |
| Twist direction | right-hand | |
| Twist angle | 40 degrees | |
| Type of thread-cutting tool | machine tap for dynamic machining | |
| Taper lead form | C | |
| Application for type of drilling | blind hole | |
| To depth (x diameter) | 2.5 | |
| Number of clamping slots | 3 | |
| Core hole diameter | 8.8 mm | |
| Flank angle | 55 degrees | |
| Square-drive width across flats | 5.5 mm | |
| Tool material | HSS-E | |
| Coating | TiN | |
| Interface | joint 1; joint 1 | |
| Overall length | 90 mm | |
| Cutting direction | right-hand cutting | |
| Tool version | solid steel | |
| Standard | DIN 5156 | |
| Shape letter standard number | C | |
| Data carriers | without data carrier | |
| Machining method | thread processing internal (EGI) | |
| Colour ring | green | |
| Type of product | taps |
| Article number | 178335 | |
| Catalog number | 137806 | |
| EAN / GTIN | 4062406373504 | |
| Manufacturer number | 137806 G1/8 | |
| Manufacturer/responsible person | Hoffmann Supply Chain GmbH & Co. KG, Poststraße 15, 90471 Nürnberg, Germany, www.hoffmann-group.com |