Cleveland
Cleveland C86213 Spiral Point Tap Plug 3 Flutes #12-28 UNF Cobalt Black Oxide
A #12-28 UNF spiral-point tap with three flutes, cobalt construction and black-oxide finish for through-hole threading
- Cobalt construction resists heat in tough materials
- Spiral point pushes chips forward for smoother threading
- Three flutes balance strength and chip clearance
- #12-28 UNF size matches standard fine-pitch holes
- Black oxide finish reduces friction and adds wear resistance
Spiral Point Tap #12-28 UNF
The Cleveland C86213 is a spiral point tap designed for creating UNF threads in #12-28 size. It features a cobalt construction with a black oxide finish for durability. The plug-style tap has three flutes and a right-hand thread orientation. It is built for through-hole tapping applications where chip evacuation is important.
Suited for through-hole threading in steel
This tap suits machinists and maintenance technicians cutting #12-28 UNF threads in through-holes. The spiral point design pushes chips ahead of the cut, reducing clogging in deeper holes. It is not for blind-hole work where chips must be pulled upward. Buyers needing a bottoming or taper chamfer should look at a different tap style.
Verify drill size and material compatibility
Before ordering, confirm the 75 percent thread drill size of 4.60 mm matches your drilling operation. Ensure the workpiece material is compatible with cobalt tooling and the 2B class of fit meets your specification. Check that the overall length of 3 5/32 in and thread length of 1 1/16 in suit your tool holder and hole depth.
Highlights
- Cobalt construction resists heat in tough materials
- Spiral point pushes chips forward for smoother threading
- Three flutes balance strength and chip clearance
- #12-28 UNF size matches standard fine-pitch holes
- Black oxide finish reduces friction and adds wear resistance
Specifications
| Brand | CLEVELAND |
|---|
Questions about this item
What size drill bit do I need before using the #12-28 UNF tap?
The 75 percent thread drill size is 4.60 mm for this #12-28 UNF tap.
Will this tap fit a standard tap wrench or T-handle?
Yes, the shank follows standard dimensions for a #12-28 UNF hand tap and works with common tap wrenches.
How can I confirm the threads are cut to the correct 2B class of fit?
Check the finished threads with a #12-28 UNF 2B go/no-go thread gauge; the go gauge should pass and the no-go gauge should stop.
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