Osg 2907401 Spiral Flute Tap 6-32 Unc Modified Bottoming

Product Description

The OSG 2907401 is a spiral flute tap designed to cut 6-32 UNC internal threads in a wide range of ferrous materials. It features a 45-degree right-hand helix with 3 flutes and a modified bottoming chamfer, making it well suited for threading holes close to the bottom. Built from vanadium high-speed steel and finished with a steam oxide coating, this tap provides good lubricity and wear resistance during tapping operations. Overall length is 2 inches, and it carries a 3B class of fit with an H2 thread limit for standard commercial tolerance threads. It is intended for use by machinists, tool and die makers, and maintenance professionals working with tapped hole applications.

This tap is appropriate for use in alloy steel, carbon steel, cast iron, stainless steel, die steel, and hardened steel. It is sized for 6-32 UNC threading, a common fastener size found in light-duty mechanical assemblies, electrical enclosures, and precision components. The modified bottoming chamfer allows threading deeper into blind holes than a standard plug tap, making it a practical choice for confined-depth applications in production and maintenance environments.

Key Features

• 6-32 UNC thread form with 32 threads per inch and 3B class of fit
• 45-degree right-hand spiral flute helix for efficient chip evacuation
• Modified bottoming chamfer for threading closer to the bottom of blind holes
• Vanadium high-speed steel construction for toughness in ferrous materials
• Steam oxide coating for improved lubricity and corrosion resistance
• H2 thread limit for standard commercial tolerance control

Compatibility

Designed for use in alloy steel, carbon steel, cast iron, stainless steel, die steel, and hardened steel applications requiring 6-32 UNC internal threads.

Installation Notes

Install and operate this tap using a standard tap wrench, tapping head, or CNC tapping cycle appropriate for the 6-32 size. Ensure the workpiece is secured and the hole is drilled to the correct tap drill diameter before threading. Apply cutting fluid appropriate for the workpiece material to extend tool life and improve thread quality. This tap does not support coolant-through delivery.