Cleveland
Cleveland C54476 Straight Flute Hand Tap 1/4"-28 UNF HSS 4-flute
Creates precise UNF threads in a single pass using four-flute high-speed steel
- TypeTaps
- Right-hand UNF threads for standard fastening
- 1/4"-28 size matches common applications
- Four-flute design clears chips efficiently
- High-speed steel resists wear in steel
- H3 limit gives 3B class-of-fit accuracy
Straight Flute Hand Tap 1/4"-28 UNF
This Cleveland C54476 straight flute hand tap cuts 1/4"-28 UNF threads in a three-piece kit. It is made from high-speed steel with a bright uncoated finish. The tool suits maintenance technicians and machinists creating Class 3B right-hand threads.
Thermals noise and power draw
Hand taps generate no heat, noise or power draw during manual operation. Cutting performance depends on the operator's technique and the workpiece material. Proper lubrication reduces friction and extends tool life in normal workshop use.
Thread size 1/4"-28 UNF H3 limit
The H3 thread limit and 75 percent thread drill size of 5.45 mm define the fit for this UNF tap. Buyers needing a different thread pitch, diameter or class of fit cannot use this part. Verify the required specification before ordering.
Highlights
- Right-hand UNF threads for standard fastening
- 1/4"-28 size matches common applications
- Four-flute design clears chips efficiently
- High-speed steel resists wear in steel
- H3 limit gives 3B class-of-fit accuracy
Specifications
| Brand | CLEVELAND |
|---|---|
| Type | Taps |
Questions about this item
How do I install the 1/4"-28 UNF straight flute hand tap, and what step do people often get wrong?
Use a 5.45 mm drill for the 75 percent thread hole, then turn the tap by hand with a tap wrench; the common error is forcing it without reversing to break chips, which can snap the flutes.
What maintenance or replacement will the HSS tap need later?
The bright uncoated high-speed steel dulls with use; resharpen the four flutes when thread quality drops, or replace the tap once the cutting edges wear beyond regrinding.
What limit appears first during sustained threading with this H3 class-of-fit tap?
The H3 pitch-diameter tolerance is the first constraint; as the flutes wear, the thread may fall outside the 3B class-of-fit before the tool physically breaks.
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