Cleveland
Cleveland C57191 Spiral Point Tap 7/16"-14 UNC 3 Flutes Bright
Cuts 7/16"-14 UNC threads in through-holes with a spiral-point design that pushes chips ahead
- Cuts threads efficiently with 3-flute spiral point design
- Handles UNC 7/16"-14 threads for standard fastening tasks
- High-speed steel construction resists wear during repeated use
- Bright uncoated finish allows clear chip visibility
- 75% thread drill size U ensures proper hole preparation
Cleveland C57191 Spiral Point Tap
This Cleveland C57191 spiral point tap cuts internal threads in through-hole applications. It suits machinists and maintenance technicians who need reliable thread production in steel or similar materials. The bright finish provides standard performance without coating-specific constraints.
7/16"-14 UNC thread size with H2 limit
The tap produces a 7/16"-14 UNC thread to a class 2B fit with an H2 thread limit. A 75 percent thread drill size U is required to prepare the hole correctly. This single specification determines whether the tap matches the required thread profile and tolerance for the job.
Three-flute design aids chip evacuation
The three-flute spiral point pushes chips ahead of the cut, reducing clogging in through holes. Right-hand cutting direction matches standard tooling setups. Common issues include tap breakage if the drilled hole is undersized or if cutting fluid is omitted during operation.
Highlights
- Cuts threads efficiently with 3-flute spiral point design
- Handles UNC 7/16"-14 threads for standard fastening tasks
- High-speed steel construction resists wear during repeated use
- Bright uncoated finish allows clear chip visibility
- 75% thread drill size U ensures proper hole preparation
Specifications
| Brand | CLEVELAND |
|---|
Questions about this item
How does the 14 threads per inch pitch perform when cutting new threads in a workpiece?
The 7/16"-14 UNC size with a 14 threads per inch pitch cuts standard coarse threads suitable for general fastening applications in steel and similar materials.
What does the UNC thread standard mean for compatibility with nuts and bolts?
UNC defines a Unified National Coarse thread form with a 2B class of fit, so the tap produces threads that accept standard UNC bolts and nuts of the same diameter and pitch.
What are the overall length and thread length dimensions for checking tool clearance?
The tap measures 3 5/32 inches overall with a 1 7/16 inch thread length, requiring enough spindle travel and workpiece depth to accommodate both.
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