Cleveland
Cleveland C55333 Spiral Point Tap Plug 3 Flutes 1/2-13 UNC HSS TiN
Cuts 1/2-13 UNC threads with a spiral-point plug tap made from TiN-coated high-speed steel
- Spiral point pushes chips forward for cleaner threads
- 1/2-13 UNC thread size fits standard coarse-pitch holes
- High-speed steel with TiN coating resists wear
- Three flutes balance strength and chip clearance
- H5 thread limit suits 2B-3B class of fit
Thread specification
The Cleveland C55333 is a spiral-point tap designed to cut internal threads in through-holes. Made from high-speed steel with a TiN coating, it has three flutes and a right-hand thread form. The plug chamfer allows easier starting in a pre-drilled hole. It produces a 1/2-13 UNC thread to class 2B-3B fit.
Application fit
This tap suits machinists and maintenance teams cutting 1/2-13 UNC threads in steel or similar materials where a through-hole exists. The spiral point pushes chips ahead of the cut, reducing clogging in deep holes. Buyers who need a bottoming tap for blind holes or a different thread pitch should select another tool.
Critical spec
The thread limit is H5, which determines the pitch-diameter tolerance and the resulting class of fit. Using a tap with a different limit will produce threads that may not gauge correctly for 2B-3B requirements. Verify the limit matches the drawing before purchase.
Highlights
- Spiral point pushes chips forward for cleaner threads
- 1/2-13 UNC thread size fits standard coarse-pitch holes
- High-speed steel with TiN coating resists wear
- Three flutes balance strength and chip clearance
- H5 thread limit suits 2B-3B class of fit
Specifications
| Brand | CLEVELAND |
|---|
Questions about this item
Will the HSS TiN coating on this 1/2-13 UNC tap wear out and require resharpening?
The TiN coating extends tool life in steel, but the high-speed steel cutting edges will eventually dull and need professional resharpening or replacement.
What limits continuous threading with this H5-limit tap?
Chip evacuation in deep holes is the primary limit; the spiral point pushes chips ahead, but a 3 3/8 in overall length restricts reach in blind holes.
How much heat builds up when running this tap all day in production?
High-speed steel with TiN coating handles typical cutting temperatures, but sustained high-speed use without coolant will generate significant heat at the cutting edges.
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