CLEVELAND Spiral Point Tap: 3/8"-16 UNC, H3 / 2B, 3 Flute, Plug Chamfer (MPN C55390)

A CLEVELAND Spiral Point Tap is used for threading blind or through holes in production machining. Its spiral-point design pushes chips ahead, reducing chip clogging in ferrous and non-ferrous materials. Common applications include automotive, aerospace, and general manufacturing where consistent thread quality is required.

The CLEVELAND C55390 is a 3/8"-16 UNC spiral point tap with an H3/2B tolerance, 3 flutes, and a plug chamfer. It is designed for general purpose threading in materials such as steel, aluminum, and cast iron. The H3 limit ensures precise thread fit for 2B class holes.

CLEVELAND taps are available to order through 3G Electric, a global industrial equipment distributor. We source and deliver genuine CLEVELAND cutting tools worldwide, handling full logistics and customs clearance. Contact 3G Electric for pricing and lead time on the C55390 spiral point tap.

Select a CLEVELAND tap based on thread size, pitch, and material. For 3/8"-16 UNC threads in steel or aluminum, a spiral point tap like the C55390 with plug chamfer works well. Match the H limit (e.g., H3) to the required thread class (2B). Always use proper cutting fluid and machine speed for best results.