OSG Spiral Flute Tap: #5-40 UNC, 2B-3B, 2 Flute, Bottoming Chamfer
The OSG Spiral Flute Tap (#5-40 UNC, MPN 2986501) is a general purpose spiral-flute tap with a 2B-3B thread class, bottoming chamfer, and black oxide high-speed steel construction. It features 2 flutes and is…
SKU 3G-OTH-231210
Need installation or engineering help?
Ask a question
Product Description
The OSG Spiral Flute Tap (#5-40 UNC, MPN 2986501) is a general purpose spiral-flute tap with a 2B-3B thread class, bottoming chamfer, and black oxide high-speed steel construction. It features 2 flutes and is designed for threading applications requiring a bottoming chamfer geometry.
Frequently Asked Questions
What is the OSG #5-40 UNC spiral flute tap used for?
This OSG spiral flute tap is designed for threading blind holes in materials such as steel and aluminum. Its bottoming chamfer allows threading close to the hole bottom, while the spiral flute design evacuates chips upward, preventing clogging. It is commonly used in automotive, aerospace, and general manufacturing applications.
What are the specifications of the OSG 2986501 tap?
The OSG 2986501 is a #5-40 UNC spiral flute tap with a 2B-3B thread class, 2 flutes, and a bottoming chamfer. It is made from black oxide high speed steel for wear resistance and reduced friction. This tap is suitable for threading blind holes in ferrous and non-ferrous materials.
Where to buy OSG taps in worldwide?
You can source the OSG 2986501 spiral flute tap through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide locations. Contact us for availability and lead time; we provide competitive pricing and reliable sourcing for OSG cutting tools.
How to select the correct OSG tap for blind holes?
For blind holes, choose a spiral flute tap with a bottoming chamfer, like the OSG #5-40 UNC model. The spiral flute design pulls chips out of the hole, preventing breakage. Ensure the tap size matches the thread specification (e.g., #5-40 UNC) and material compatibility. Consult OSG's technical guides for optimal speeds and feeds.
Used in
Common applications for OSGOSG Products
3G Electric supplies OSG general purpose spiral-flute taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















