OSG Spiral Flute Tap: 1/4"-28 UNF, H3 / 2B-3B, 3 Flute
SKU 3G-OTH-230772
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Frequently Asked Questions
What is the OSG spiral flute tap used for?
This OSG spiral flute tap is designed for threading blind holes in materials like steel and aluminum. Its spiral flute design evacuates chips upward, preventing clogging and ensuring clean threads. It is commonly used in automotive, aerospace, and general machining applications.
What are the specifications of the OSG 1/4"-28 UNF tap?
This OSG tap has a 1/4"-28 UNF thread size, H3 / 2B-3B tolerance, 3 flutes, and a bottoming chamfer. The H3 ground thread limit ensures precise fit for class 2B or 3B nuts. It is a general purpose spiral flute tap for blind hole threading.
Where to buy OSG taps in worldwide?
3G Electric supplies OSG taps worldwide, handling logistics, customs, and delivery to your facility. As a global industrial solutions provider, we source genuine OSG cutting tools like this 1/4"-28 UNF spiral flute tap. Contact us for pricing and lead time.
How to select the right OSG tap for blind holes?
For blind holes, choose a spiral flute tap like this OSG model to pull chips out of the hole. Match thread size (1/4"-28 UNF), chamfer type (bottoming for full threads near bottom), and tolerance class (H3 for 2B/3B fit). Consult OSG's technical data for material-specific speeds.
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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.















