Widia Gtd
Widia Gtd VTSFT-TC5143 Spiral Flute Tap #10-24 Bottoming 2 Flutes UNJC
Spiral-flute tap cuts #10-24 UNJC threads to a 2 11/32 inch depth with two flutes in high-speed steel
- Spiral flutes clear chips in blind holes
- Bottoming chamfer threads to the hole base
- #10-24 UNJC fits aerospace-class threads
- Two flutes balance strength and chip space
- High-speed steel resists wear in tough alloys
Spiral Flute Tap #10-24 UNJC
The Widia Gtd VTSFT-TC5143 is a high-speed steel spiral flute tap designed for #10-24 UNJC threads. It features a bottoming chamfer with two flutes and an overall length of 2 11/32 in. The thread limit is H5 with a class of fit 2B for right-hand threads.
For internal threading in blind holes.
This tap suits machinists cutting #10-24 UNJC threads in blind holes where chip evacuation upwards is required. The bottoming design allows threading close to the bottom. It is not for through-hole applications or metric thread sizes.
Bottoming chamfer with H5 thread limit
The bottoming chamfer and H5 thread limit define the engagement depth and tolerance for the #10-24 UNJC thread. These specifications determine compatibility with the required class of fit 2B and the 75 percent thread drill size #25.
Highlights
- Spiral flutes clear chips in blind holes
- Bottoming chamfer threads to the hole base
- #10-24 UNJC fits aerospace-class threads
- Two flutes balance strength and chip space
- High-speed steel resists wear in tough alloys
Specifications
| Brand | WIDIA |
|---|
Questions about this item
What size drill bit matches the 75 percent thread drill size #25 for this #10-24 tap?
Use a #25 drill bit to achieve the recommended 75 percent thread depth before tapping the #10-24 UNJC hole.
How do I avoid breaking the two flutes when starting the bottoming tap in a blind hole?
Start the tap straight, use cutting fluid, and advance one turn then reverse half a turn to clear chips from the two spiral flutes.
When should I replace this high-speed steel tap after repeated #10-24 threading jobs?
Replace the tap when the cutting edges on the two flutes show visible wear or when threads begin to measure out of the 2B class of fit.
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