OSG Spiral Flute Tap: #4-40 UNC, 2B, 2 Flute, Bottoming Chamfer

The OSG spiral flute tap #4-40 UNC is designed for threading blind holes in materials like steel and aluminum. Its spiral flute design pulls chips upward, preventing clogging and ensuring clean threads. This bottoming chamfer tap reaches the bottom of the hole, making it ideal for precision machining and maintenance applications.

This OSG tap has a #4-40 UNC thread size, 2B class fit, 2 flutes, and a bottoming chamfer. It is made from black oxide high-speed steel (HSS) for wear resistance and reduced friction. The manufacturer part number is 2985001. It is suitable for general-purpose threading in blind holes.

3G Electric supplies the OSG spiral flute tap #4-40 UNC (MPN 2985001) to customers worldwide. We handle full logistics, customs clearance, and delivery to your location. As a global industrial solutions provider, we source genuine OSG taps and support procurement across 14 departments, including cutting tools and machining.

For blind holes, choose a spiral flute tap with a bottoming chamfer, like this OSG #4-40 UNC model. The spiral flute design evacuates chips upward, preventing jamming. Ensure the tap matches the thread size (UNC), class of fit (2B), and material (HSS for general use). Consult OSG's technical data for optimal speeds and lubrication.