OSG Spiral Point Tap: 1/4"-20 UNC, H1 / 2B-3B, 2 Flute, Plug Chamfer
SKU 3G-OTH-214751
Need installation or engineering help?
Ask a question
Frequently Asked Questions
What is an OSG spiral point tap used for?
An OSG spiral point tap is used for through-hole threading in metalworking. Its spiral point design pushes chips ahead, preventing clogging. It is ideal for high-speed production tapping in steel, aluminum, and other materials, ensuring clean threads in applications like automotive and general manufacturing.
What are the specifications of the OSG 1/4"-20 UNC spiral point tap?
This OSG tap has a 1/4"-20 UNC thread size, H1 / 2B-3B tolerance, 2 flutes, and a plug chamfer. It is made of black oxide high-speed steel (MPN 1220001). The H1 limit ensures precise thread fit for general-purpose tapping in through holes.
Where to buy OSG taps in worldwide?
3G Electric supplies OSG taps worldwide. As a global industrial solutions provider, we handle sourcing, logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on the OSG 1/4"-20 UNC spiral point tap (MPN 1220001) and other cutting tools.
How to select the right spiral point tap for through holes?
Select a spiral point tap based on thread size, material, and hole type. For through holes, use a plug or bottoming chamfer. Match the tap tolerance (e.g., H1) to the required thread class (2B). OSG taps are suitable for steel and aluminum; consult a technical datasheet for speeds and feeds.
Used in
Common applications for OSGOSG Products
3G Electric supplies OSG general purpose spiral-point taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.














