OSG Spiral Flute Tap: 1 1/2"-12 UNF, H5 / 2B-3B, 4 Flute

The OSG spiral flute tap is designed for threading blind holes in materials like steel and stainless steel. Its spiral flute design pulls chips upward, preventing clogging and ensuring clean threads. It is commonly used in automotive, aerospace, and general machining applications.

This OSG tap has a thread size of 1 1/2"-12 UNF, with an H5 tolerance for 2B-3B class fit. It features 4 flutes and a modified bottoming chamfer, making it suitable for threading close to the bottom of blind holes. The manufacturer part number is 2946801.

3G Electric supplies OSG taps worldwide, handling logistics, customs, and delivery to your location. As a global industrial solutions provider, we source genuine OSG cutting tools like the spiral flute tap 2946801 and deliver them to customers across industries, ensuring compliance with international shipping requirements.

For blind holes, choose a spiral flute tap with a modified bottoming chamfer, like this OSG model, to thread close to the hole bottom. Match the tap tolerance (e.g., H5) to your required thread class (2B-3B). Ensure the tap material suits your workpiece—OSG taps are available for steel, stainless, and non-ferrous metals.