Cleveland
Cleveland C27700 Spiral Point Tap 1/4"-20 UNC 3 Flutes Steam Oxide
Creates 1/4"-20 UNC threads in through-holes with a three-flute cobalt spiral-point design and steam-oxide finish
- Precision threading with 1/4"-20 UNC spiral point design
- Clean chip evacuation through three-flute spiral geometry
- Steam oxide finish resists wear during repeated tapping
- Right-hand cut matches standard thread direction needs
- H3 thread limit ensures 2B class fit accuracy
Thread Cutting Tool for 1/4"-20 UNC Holes
The Cleveland C27700 is a spiral point tap designed to cut unified coarse threads in through holes. It suits mechanics and fabricators who need reliable thread creation in metal workpieces using hand or machine tapping operations.
Cobalt Construction Handles Heat During Use
Cobalt material resists wear and manages heat buildup when cutting threads in tough alloys. The black oxide surface treatment reduces friction and helps prevent galling during normal tapping cycles.
Three Flute Design Guides Chip Flow Forward
Spiral point geometry pushes chips ahead of the tap in through hole applications, reducing clogging risk. Right hand cutting direction and H3 thread limit produce a class 2B fit when used with a number 7 drill size.
Highlights
- Precision threading with 1/4"-20 UNC spiral point design
- Clean chip evacuation through three-flute spiral geometry
- Steam oxide finish resists wear during repeated tapping
- Right-hand cut matches standard thread direction needs
- H3 thread limit ensures 2B class fit accuracy
Specifications
| Brand | CLEVELAND |
|---|
Questions about this item
How do you install a 1/4"-20 UNC spiral point tap and what step is often missed?
Use a #7 drill for the 75 percent thread, then run the tap straight with cutting fluid; the step often missed is keeping the tap perpendicular so the H3 limit threads cut true to 2B fit.
What maintenance or replacement will the C27700 tap need later?
The cobalt flutes wear gradually; replace the tap when the steam oxide coating is gone and threads start to tear instead of cutting cleanly.
What limit shows up first when tapping 1/4"-20 holes continuously?
Heat buildup in the 3-flute cobalt body reduces cutting speed before the H3 thread limit is reached.
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