Widia Gtd
Widia Gtd VTSFT-TC5566 Spiral Flute Tap M16x1.50 Bottoming 2 Flutes Metric Fine
Cuts M16x1.50 metric fine threads in a bottoming hole using two spiral flutes and high-speed steel
- M16 x 1.5 fine thread for precise automotive fits
- Spiral flute design clears chips in deep blind holes
- Two-flute high-speed steel taps tough alloy steels
- 7 mm thread length reaches full depth in 96.8 mm overall
- D6 limit and 6H class ensure gauge-perfect threads
Widia Gtd VTSFT-TC5566 Spiral Flute Tap
The Widia Gtd VTSFT-TC5566 is a high-speed steel spiral flute tap designed to cut metric fine threads. It produces M16x1.50 internal threads with a Class 6H fit for general engineering applications.
Machinists cutting blind holes in steel or cast iron
This bottoming tap suits workshops needing to thread close to the bottom of blind holes. It is not for through-hole tapping where a plug chamfer clears chips forward, nor for hand tapping where a taper start eases alignment.
Two-flute geometry aids chip evacuation in blind
The 27.70 mm thread length and 96.80 mm overall length reach standard depths. Use the specified 14.50 mm drill size for 75 percent thread engagement; an oversized hole reduces strength while an undersized hole increases torque and breakage risk.
Highlights
- M16 x 1.5 fine thread for precise automotive fits
- Spiral flute design clears chips in deep blind holes
- Two-flute high-speed steel taps tough alloy steels
- 7 mm thread length reaches full depth in 96.8 mm overall
- D6 limit and 6H class ensure gauge-perfect threads
Specifications
| Brand | WIDIA |
|---|
Questions about this item
What thread size and drill bit do I need to prepare before using the M16×1.50 tap?
The tap cuts an M16×1.50 metric fine thread and requires a 14.50 mm drill for 75 % thread engagement.
Will the 96.80 mm overall length and 27.70 mm thread length reach through my existing fixture?
The tap is 96.80 mm long overall with a 27.70 mm cutting portion; measure your fixture depth to confirm reach.
How can I verify the tap is producing the correct 6H class fit after threading?
Check the finished hole with an M16×1.50 6H go / no-go gauge; the go gauge should enter fully and the no-go should not.
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