OSG Spiral Flute Tap: 9/16"-12 UNC, H3 / 2B-3B, 4 Flute
The OSG Spiral Flute Tap (9/16"-12 UNC, MPN 2948608) is a general-purpose spiral-flute tap with an H3 / 2B-3B tolerance, 4 flutes, and a modified bottoming chamfer. This tool is designed for threading applications…
SKU 3G-OTH-230899
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Product Description
The OSG Spiral Flute Tap (9/16"-12 UNC, MPN 2948608) is a general-purpose spiral-flute tap with an H3 / 2B-3B tolerance, 4 flutes, and a modified bottoming chamfer. This tool is designed for threading applications requiring precise chip evacuation and thread accuracy.
Frequently Asked Questions
What is the OSG spiral flute tap 2948608 used for?
The OSG spiral flute tap 2948608 is designed for threading blind holes in ferrous and non-ferrous materials. Its spiral flute design evacuates chips upward, making it ideal for general-purpose tapping in automotive, aerospace, and general manufacturing applications where chip clearance is critical.
What are the specifications of the OSG 2948608 tap?
The OSG 2948608 is a 9/16"-12 UNC spiral flute tap with a modified bottoming chamfer and 4 flutes. It has an H3 / 2B-3B tolerance class, ensuring precise thread fit. This general-purpose tap is suitable for blind hole threading and is manufactured by OSG.
Where to buy OSG taps in worldwide?
3G Electric supplies OSG taps worldwide, including the 2948608 model. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time; we source and deliver OSG cutting tools to any country.
How to select the correct OSG tap for blind holes?
For blind holes, choose a spiral flute tap like the OSG 2948608, which pushes chips upward. Ensure the tap size matches your thread specification (e.g., 9/16"-12 UNC) and tolerance class (H3 / 2B-3B). Use a modified bottoming chamfer for threads close to the hole bottom. Always match tap material to workpiece hardness.
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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.















