Machine Nut Tap FZ HSS-G left hand thread - Tr 16 x 4 LH by VÖLKEL, item no. 79128-L, suitable for cutting internal threads.
You tap nuts and short components with a machine nut tap when you need a standardized execution for workshop series work.
Match the tap to the nut thread requirement and use a stable machine holder for alignment. Keep lubrication consistent and remove chips to avoid scoring and oversize threads.
Note Clamp the nut securely and align the tool to avoid cross threading. Use a stable feed to control chip load.
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| Type of thread | metric ISO- trapezoidal thread |
|---|---|
| Standard | DIN |
| Material | HSS-G |
| Tolerance | 7H |
| Size | Tr 16 x 4 LH |
| Overall length (L1) | 180 mm |
| Thread length (L2) | 116 mm |
| Core hole diameter (D1) | 12.25 mm |
| Shank diameter (D2) | 11.0 mm |
| Drive connector | 9.0 mm |
| Item number | 79128-L |
| Type of flute | straight fluted |
| Application | for through holes |
| Thread standard | DIN 103 |









