Widia Gtd
Widia Gtd VTSFT-TC5035 Spiral Flute Tap #10-32 2 Flutes UNF
Cuts UNF #10-32 threads in blind holes with a right-hand HSS-E spiral flute and two flutes
- Spiral flute design clears chips efficiently
- #10-32 UNF thread size fits standard applications
- Two flutes balance strength and cutting speed
- HSS-E material resists wear during tapping
- H5 thread limit ensures 3B class fit
Thread Cutting for UNF #10-32 Fasteners
This Widia Gtd spiral flute tap produces Unified National Fine threads in a #10-32 size. It suits machinists and maintenance teams cutting internal threads in blind holes where chip evacuation matters. The right-hand thread direction matches standard fastener conventions.
Upgrade from Straight Flute Taps
The spiral flute geometry pulls chips upward and out of the hole, reducing packing and breakage compared with straight flute tools. The jump is worth it when tapping deeper blind holes in ductile materials where evacuation becomes difficult.
Standard Tap Installation Practice
The tap fits conventional tap holders and CNC tooling with no special adapters. Common issues include misalignment at entry, incorrect drill size leading to oversize threads, and insufficient lubrication causing premature wear on the HSS-E cutting edges.
Highlights
- Spiral flute design clears chips efficiently
- #10-32 UNF thread size fits standard applications
- Two flutes balance strength and cutting speed
- HSS-E material resists wear during tapping
- H5 thread limit ensures 3B class fit
Specifications
| Brand | WIDIA |
|---|
Questions about this item
What drill size matches the #10-32 thread on this tap?
Use a #21 drill for 75 percent thread engagement with the #10-32 UNF spiral-flute tap.
How do you start the tap straight in the hole?
Align the tap perpendicular to the workpiece and turn slowly with steady pressure; the spiral flutes pull chips clear but do not correct misalignment.
When should this HSS-E tap be replaced?
Replace it when the cutting edges dull, threads gauge oversize, or chip evacuation slows despite proper lubrication.
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