Cleveland
Cleveland 57214 Spiral Point Tap 1/2-13 UNC 3 Flute HSS
A 1/2-13 UNC spiral-point tap with three flutes in high-speed steel for through-hole threading
- Cuts clean threads with 3-flute spiral point design
- Handles 1/2-13 UNC threads in steel and iron
- High-speed steel resists wear during repeated use
- 75% thread drill size .4219 in ensures proper fit
- Right-hand H2 limit matches 2B class requirements
Cleveland 57214 Spiral Point Tap
The Cleveland 57214 is a spiral point tap designed for creating internal UNC threads in a range of materials. It features a 1/2-13 thread size with three flutes and a plug chamfer for through-hole applications. Manufactured from high speed steel with a bright uncoated finish, it offers a Class 2B fit with an H2 thread limit. This tool is intended for machinists and maintenance technicians cutting new threads in through holes.
Suited for right-hand through-hole threading
This tap suits users cutting right-hand UNC threads in through holes where chip evacuation ahead of the tool is preferred. It is not for blind holes where chips must be pulled upward, nor for left-hand thread requirements. Builders needing a different thread form, pitch diameter limit, or flute count should look at other options. The uncoated surface may wear faster in abrasive or high-volume production compared to coated alternatives.
1/2-13 UNC thread size with H2 limit
The decisive specification is the 1/2-13 UNC thread size combined with an H2 pitch diameter limit for a Class 2B fit. This defines the exact bolt compatibility and tolerance zone for the finished thread. The 75 percent thread drill size of .4219 in prepares the correct hole for this tap. Verify the thread specification and fit class against your drawing before use.
Highlights
- Cuts clean threads with 3-flute spiral point design
- Handles 1/2-13 UNC threads in steel and iron
- High-speed steel resists wear during repeated use
- 75% thread drill size .4219 in ensures proper fit
- Right-hand H2 limit matches 2B class requirements
Specifications
| Brand | CLEVELAND |
|---|
Questions about this item
What drill bit size do I need before using this 1/2-13 UNC tap?
Use a 75 percent thread drill size of 0.4219 in to prepare the hole for this spiral point tap.
Will this H2 thread limit tap fit my existing 2B class UNC nuts?
Yes, the H2 thread limit is designed for a Class of Fit 2B, so it matches standard 2B UNC nuts.
How can I confirm the tap is cutting correctly after setup?
Check that the spiral point pushes chips ahead and produces clean threads matching the 1 21/32 in thread length.
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