Greenfield Threading
Greenfield Threading 174539 3pc HSS Tap Set #6-40 UNF
Three-piece HSS tap set for cutting #6-40 UNF threads in right-hand direction
- High-speed steel construction resists wear during tapping
- Titanium nitride coating extends tool life in tough materials
- Three-piece set includes taper, plug and bottoming taps
- UNF #6-40 thread standard matches fine-pitch applications
- Right-hand thread direction suits standard fastening tasks
Threading Set for #6-40 UNF
This three-piece set supplies taper, plug and bottoming hand taps cut from high-speed steel with a TiN coating. It targets mechanics and machinists who need to create or repair internal threads in the #6-40 UNF size.
Verify Thread Size and Fit Class
Confirm the workpiece requires a #6-40 UNF thread with a 2B class of fit and right-hand direction. The taps have a thread length of 11/16 in and an overall length of 2 in, so the hole depth must accommodate that reach. Ensure the material is suited to high-speed steel cutting tools.
High-Speed Steel with TiN Coating
The HSS body and TiN surface resist wear during repetitive hand-tapping tasks. Three flutes on each tap improve chip evacuation and reduce binding. The set includes taper, plug and bottoming styles so you can start, continue and finish threads without changing tools.
Highlights
- High-speed steel construction resists wear during tapping
- Titanium nitride coating extends tool life in tough materials
- Three-piece set includes taper, plug and bottoming taps
- UNF #6-40 thread standard matches fine-pitch applications
- Right-hand thread direction suits standard fastening tasks
Specifications
| Brand | CHICAGO-LATROBE |
|---|
Questions about this item
What comes in the 174539 set and what must I supply myself?
The set includes three high-speed steel taps — taper, plug and bottoming — for #6-40 UNF threads with TiN coating. You provide the tap wrench, cutting fluid and the workpiece.
How do I choose between the taper, plug and bottoming taps in this #6-40 UNF set?
Start with the taper tap to begin the thread, switch to the plug tap for through holes or continued cutting, and finish with the bottoming tap to reach the bottom of a blind hole.
What does the #6-40 UNF 2B H2 spec mean when I cut threads in steel?
It produces a #6 diameter, 40 threads-per-inch Unified Fine thread with a class 2B fit and H2 pitch-diameter limit, giving a standard precision right-hand internal thread 11/16 in long.
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