CLEVELAND Spiral Point Tap: 1/4"-20 UNC, H1 / 2B, 2 Flute, Plug Chamfer
The CLEVELAND Spiral Point Tap (SKU 435U78, MPN C57403) is a low-shear spiral-point tap for 1/4"-20 UNC threads. It features H1 / 2B tolerance, a plug chamfer, 2 flutes, and is made of high-speed steel.
SKU 3G-OTH-217689
Need installation or engineering help?
Ask a question
Product Description
The CLEVELAND Spiral Point Tap (SKU 435U78, MPN C57403) is a low-shear spiral-point tap for 1/4"-20 UNC threads. It features H1 / 2B tolerance, a plug chamfer, 2 flutes, and is made of high-speed steel.
Frequently Asked Questions
What is a CLEVELAND Spiral Point Tap used for?
A CLEVELAND Spiral Point Tap is used for threading blind or through holes in metal, particularly in production environments. Its spiral-point design pushes chips ahead, reducing clogging and breakage. Common applications include automotive, aerospace, and general manufacturing where precise internal threads are required.
What are the specifications of the CLEVELAND Spiral Point Tap C57403?
The CLEVELAND Spiral Point Tap C57403 has a 1/4"-20 UNC thread size, H1 / 2B class of fit, 2 flutes, and a plug chamfer. It is made of high-speed steel (HSS) and is designed for low-shear tapping. The manufacturer part number is C57403.
Where to buy CLEVELAND Spiral Point Tap C57403 worldwide?
You can source the CLEVELAND Spiral Point Tap C57403 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time on this and other CLEVELAND tooling.
How to select the right CLEVELAND Spiral Point Tap for a job?
To select the right CLEVELAND Spiral Point Tap, match the thread size (e.g., 1/4"-20 UNC), class of fit (H1 / 2B), and chamfer type (plug) to your hole and material. For blind holes, spiral-point taps push chips forward. High-speed steel (HSS) is suitable for general-purpose tapping in steel and aluminum.
Used in
Common applications for CLEVELANDCLEVELAND Products
3G Electric supplies CLEVELAND low-shear spiral-point taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.












