Cleveland
Cleveland C55124 Straight Flute Hand Tap 3/8"-16 Plug HSS TiN
Cuts 3/8"-16 UNC threads with a 1.25 in thread length and 2.94 in overall length in high-speed steel with TiN coating
- TypeTaps
- Creates precise UNC threads with 3/8"-16 sizing
- TiN coating extends tool life during repetitive tapping
- Plug chamfer starts threads easily in through holes
- High-speed steel resists wear in steel and alloys
- 75 % thread drill size 5/16 in simplifies prep
Cleveland C55124 Straight Flute Hand Tap
The Cleveland C55124 is a straight-flute hand tap designed for cutting internal UNC threads in through-holes or deep blind holes. Machinists and maintenance technicians use it to produce 3/8"-16 threads in steel, cast iron and non-ferrous metals. The TiN coating increases surface hardness and reduces friction for longer tool life. Right-hand cutting direction matches standard threading practice.
Plug chamfer limits starting torque
A plug chamfer provides a moderate lead that balances ease of starting with thread depth reach. It requires higher starting torque than a taper tap and clears chips less efficiently than a bottoming tap in blind holes. The 1.25 in thread length and 2.94 in overall length restrict use to holes that accommodate this reach. The 75 percent thread drill size of 5/16 in must be observed for proper thread formation.
H2 thread limit determines class-of-fit compliance
The H2 thread limit is the single specification that decides whether this tap produces the required 2B class of fit for the application. Selecting a different limit would yield a tighter or looser thread than specified. Verify the H2 designation against the engineering drawing before purchase.
Highlights
- Creates precise UNC threads with 3/8"-16 sizing
- TiN coating extends tool life during repetitive tapping
- Plug chamfer starts threads easily in through holes
- High-speed steel resists wear in steel and alloys
- 75 % thread drill size 5/16 in simplifies prep
Specifications
| Brand | CLEVELAND |
|---|---|
| Type | Taps |
Questions about this item
Should I pick the plug tap or a different style for a 3/8"-16 UNC hole?
The plug style is the standard choice for through-holes and for starting threads in blind holes before a bottoming tap finishes them.
How deep can I cut threads with the 1.25 in thread length on this tap?
You can cut full threads up to 1.25 in deep; beyond that the tap shank contacts the workpiece.
Does the H2 thread limit on this 3/8"-16 tap match a standard 2B class of fit?
Yes, H2 is the normal limit for a 2B fit in 3/8"-16 UNC, giving the correct allowance and tolerance.
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