Machine Nut Tap FZ HSS-G - Tr 26 x 5 by VÖLKEL, item no. 79148, suitable for cutting internal threads.
You apply this tool in mechanical engineering and repair work when controlled thread cutting is required. Choose the correct thread system and keep the tool square to avoid form errors.
Tr identifies trapezoidal threads typically used for lead screws, spindles, and power transmission. HSS-G indicates ground high speed steel, typically used when you need a clean profile and stable tool guidance.
Note Verify the workpiece preparation before you start and stop if torque increases unexpectedly.
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| Type of thread | metric ISO- trapezoidal thread |
|---|---|
| Standard | DIN |
| Material | HSS-G |
| Tolerance | 7H |
| Size | Tr 26 x 5 |
| Overall length (L1) | 255 mm |
| Thread length (L2) | 165 mm |
| Core hole diameter (D1) | 21.25 mm |
| Shank diameter (D2) | 20.0 mm |
| Drive connector | 16.0 mm |
| EAN | 4022835791485 |
| Item number | 79148 |
| Type of flute | straight fluted |
| Application | for through holes |
| Thread standard | DIN 103 |









