Widia Gtd
Widia Gtd VTSFT-TC5145 Spiral Flute Tap #10-32 UNF H5 2B 3 Flutes
Spiral flute tap cuts #10-32 UNF threads with H5 limit, 2B fit, and three flutes in high-speed steel with black oxide coating
- Spiral flute design clears chips efficiently in blind holes
- #10-32 UNF thread size matches standard fine-pitch fasteners
- H5 thread limit with 2B class of fit ensures precise engagement
- Three flutes balance strength and cutting speed for consistent results
- High-speed steel with black oxide finish resists wear during repeated use
Widia Gtd VTSFT-TC5145 Spiral Flute Tap
The Widia Gtd VTSFT-TC5145 is a spiral flute tap designed for cutting internal threads. It features a #10-32 UNF thread size with a 2B class of fit and H5 thread limit. The tool is made from high speed steel with a black oxide coating. It has three flutes and a right-hand thread direction.
Machinists cutting #10-32 UNF threads in blind holes
This tap suits machinists producing #10-32 UNF threads in blind holes where chip evacuation is critical. The spiral flute geometry pulls chips upward and out of the hole. It is not for through-hole applications where a straight flute or point tap would be more appropriate. Buyers needing a different thread size, class of fit, or flute count should look at other tooling.
Three flutes and a 1/2 inch thread length
The three-flute design provides a balance of strength and chip clearance for the #10-32 size. The thread length is 1/2 inch within an overall length of 2 3/8 inches. The 75 percent thread drill size is #21. The tap handles standard production volumes in materials suited to high speed steel. It runs out in very high-volume runs requiring carbide or in materials needing specialised coatings.
Highlights
- Spiral flute design clears chips efficiently in blind holes
- #10-32 UNF thread size matches standard fine-pitch fasteners
- H5 thread limit with 2B class of fit ensures precise engagement
- Three flutes balance strength and cutting speed for consistent results
- High-speed steel with black oxide finish resists wear during repeated use
Specifications
| Brand | WIDIA |
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Questions about this item
What drill size must I already have to prepare the hole for this #10-32 UNF tap?
Use a #21 drill to create the 75 percent thread hole before tapping with this tool.
Will the 2 3/8 in overall length and 1/2 in thread length fit the same holders I use for standard bottoming taps?
Yes, the dimensions match common bottoming tap holders for right-hand UNF threads.
How can I confirm the H5 limit and 2B class of fit are cutting correctly after setup?
Check the finished thread with an H5 2B go/no-go gauge to verify the 3-flute tap is producing the specified fit.
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