Helicoil
Helicoil 5476-14 M14x1.50 Straight Flute Hand Tap 4 Flutes
Creates M14×1.50 threads for Helicoil inserts with a 96.84 mm plug tap featuring four flutes and H3 limits
- TypeHole, Drill, Bore & Wire Gauges
- M14×1.50 metric fine thread cuts precise holes
- 84 mm overall length reaches deep bores
- 04 mm thread length engages full depth
- 4 flutes evacuate chips for clean cuts
- High-speed steel resists wear in steel alloys
Thread Repair Tap M14x1.50
The Helicoil 5476-14 is a straight flute hand tap designed to cut internal threads for M14x1.50 screw thread inserts. It suits technicians and hobbyists who repair damaged metric fine threads in automotive or general engineering tasks. The uncoated high-speed steel construction provides a fresh cutting surface for each job.
Cutting Performance
Four flutes evacuate chips efficiently during hand tapping, reducing torque spikes and the risk of tap breakage. The plug chamfer starts threads cleanly in through holes or deep blind holes without excessive force. Bright finish eliminates coating drag, so the tool runs cooler and requires less lubrication during normal use.
Workshop Fit
Overall length of 96.84 mm with a 46.04 mm thread length reaches standard hole depths without extensions. H3 thread limit produces the correct pitch diameter for Helicoil STI inserts, ensuring proper fit. Right-hand cut matches common metric fine fasteners, so no special tooling or adapters are needed.
Highlights
- M14×1.50 metric fine thread cuts precise holes
- 84 mm overall length reaches deep bores
- 04 mm thread length engages full depth
- 4 flutes evacuate chips for clean cuts
- High-speed steel resists wear in steel alloys
Specifications
| Brand | Helicoil |
|---|---|
| Type | Hole, Drill, Bore & Wire Gauges |
Questions about this item
How do you install the M14x1.50 straight flute hand tap and what step is commonly missed?
Use a suitable tap wrench on the square shank, apply cutting fluid, and start the plug chamfer perpendicular to the hole; the step often missed is clearing chips every few turns to prevent binding in the 46.04 mm thread length.
What maintenance or replacement will the Heli-Coil 5476-14 tap need over time?
The uncoated high-speed steel cutting edges will dull with use; resharpen or replace the tap when thread quality degrades or torque rises noticeably during cutting.
What limit appears first when tapping M14x1.50 holes continuously with this tool?
Heat buildup in the uncoated high-speed steel body limits sustained cutting speed before the H3 thread limit or four-flute geometry becomes a factor.
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