OSG Spiral Flute Tap: 3/8"-16 UNC, H2 / 2B-3B, 3 Flute
The OSG Spiral Flute Tap (3/8"-16 UNC, MPN 2931501) is a general-purpose spiral-flute tap with an H2 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. This tool is designed for threading applications…
SKU 3G-OTH-230648
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Product Description
The OSG Spiral Flute Tap (3/8"-16 UNC, MPN 2931501) is a general-purpose spiral-flute tap with an H2 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. This tool is designed for threading applications requiring precise internal threads in through or blind holes.
Frequently Asked Questions
What is the OSG spiral flute tap 3/8-16 UNC used for?
This OSG spiral flute tap is designed for threading blind holes in ferrous and non-ferrous materials. The spiral flute design evacuates chips upward, preventing clogging. It is commonly used in automotive, aerospace, and general machining applications where clean, accurate threads are required.
What are the specifications of the OSG 2931501 tap?
The OSG 2931501 is a 3/8-16 UNC spiral flute tap with a modified bottoming chamfer. It has 3 flutes and a thread tolerance of H2 / 2B-3B. This tap is suitable for producing threads in blind holes and is made by OSG, a leading cutting tool manufacturer.
Where to buy OSG taps in worldwide?
3G Electric supplies OSG taps worldwide, including the 2931501 spiral flute tap. We handle full logistics, customs clearance, and delivery to your facility. As a global industrial solutions provider, we source genuine OSG cutting tools and support your procurement needs across multiple departments.
How to select the right spiral flute tap for blind holes?
For blind holes, choose a spiral flute tap with a modified bottoming chamfer, like the OSG 2931501. Ensure the tap size matches the thread specification (e.g., 3/8-16 UNC) and the material being tapped. Use proper cutting fluid and follow manufacturer speed/feed recommendations for best thread quality.
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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.















