Cleveland
Cleveland C54085 Straight Flute Hand Tap Bottoming 3 Flutes #2-56 UNC H1 1.75 in
Straight-flute bottoming hand tap cuts #2-56 UNC threads in 1.75 in overall length with three flutes and H1 limit
- Cuts clean #2-56 UNC threads with 3-flute straight design
- Bottoming chamfer reaches full thread depth in blind holes
- High-speed steel construction resists wear during repeated use
- Bright uncoated finish prevents galling in softer materials
- 75 in overall length with .44 in thread length for precise control
Thread Size #2-56 UNC Bottoming Tap
The Cleveland C54085 straight-flute hand tap cuts internal threads to a #2-56 UNC specification with a bottoming chamfer. It is intended for machinists and maintenance technicians who need precise thread generation in through-holes or blind holes.
High-Speed Steel Construction Uncoated Finish
Bright high-speed steel provides wear resistance without coating buildup in the thread form. The three-flute geometry and right-hand cut deliver stable chip evacuation during manual or light machine tapping operations.
1.75 in Overall Length 0.44 in Thread Length
A 75-percent thread drill size of 1.73 mm prepares the hole for a class 2B fit at H1 limit. The compact length suits bench work and tight-access assemblies where longer taps cannot reach.
Highlights
- Cuts clean #2-56 UNC threads with 3-flute straight design
- Bottoming chamfer reaches full thread depth in blind holes
- High-speed steel construction resists wear during repeated use
- Bright uncoated finish prevents galling in softer materials
- 75 in overall length with .44 in thread length for precise control
Specifications
| Brand | CLEVELAND |
|---|
Questions about this item
How do I install the C54085 tap correctly and what step is often missed?
Use a 1.73 mm drill for the 75 percent thread hole, then run the tap straight with steady pressure; the step most often missed is clearing chips every half turn to avoid binding in the 0.44 in thread length.
What maintenance or replacement will the C54085 tap need over time?
The high-speed steel cutting edges dull with use; replace the tap when threads feel rough or gauge fails, and keep the bright finish lightly oiled to prevent rust between jobs.
What limit appears first during sustained tapping with the C54085?
Chip evacuation in the 0.44 in thread length becomes the limiting factor; packed flutes increase torque and can break the tap before the H1 limit is reached.
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