Cleveland
Cleveland C57130 Spiral Point Tap 3 Flutes
A spiral-point tap for cutting 1/4"-20 UNC threads in through-holes, made from bright high-speed steel with three flutes and an H3 thread limit
- 1/4"-20 UNC thread fits standard coarse applications
- Spiral point design pushes chips ahead for through-hole tapping
- Three flutes balance chip clearance with cutting strength
- High-speed steel construction resists wear in general-purpose use
- Bright uncoated finish suits low-speed manual or machine operations
Cleveland C57130 Spiral Point Tap
The Cleveland C57130 is a spiral point tap designed for through-hole threading in general-purpose applications. It cuts UNC threads measuring 1/4 In. -20 with a 2B class of fit using high speed steel construction. The bright uncoated finish suits standard machining conditions.
Upgrades from worn or damaged taps
This tap replaces cutting tools that have lost thread accuracy or show excessive flank wear. The jump is worth it when existing taps produce oversized threads or require excessive torque. The H3 thread limit and 75 percent thread drill size #7 specification restore consistent pitch diameter control.
Suits machinists cutting right-hand UNC threads
It suits operators producing 1/4 In. -20 threads in through-holes where chip evacuation ahead of the tap is required. Builders who need bottoming taps for blind holes or left-hand thread forms should look at something else. Users requiring coated tooling for abrasive materials will need a different surface treatment.
Highlights
- 1/4"-20 UNC thread fits standard coarse applications
- Spiral point design pushes chips ahead for through-hole tapping
- Three flutes balance chip clearance with cutting strength
- High-speed steel construction resists wear in general-purpose use
- Bright uncoated finish suits low-speed manual or machine operations
Specifications
| Brand | CLEVELAND |
|---|
Questions about this item
What drill size is required for the 1/4"-20 UNC tap?
Use a #7 drill bit to produce the 75 percent thread depth specified for this tap.
How do I start the tap correctly in the hole?
Apply cutting fluid, align the tap squarely, and turn the plug-style spiral point tap clockwise with steady pressure to engage the first threads.
When should this high-speed steel tap be replaced?
Replace it when the cutting edges become dull, chipped, or when thread quality degrades beyond the 2B class of fit tolerance.
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