OSG Spiral Flute Tap: 1/2"-20 UNF, H7 / 2B-3B, 3 Flute
The OSG Spiral Flute Tap (1/2"-20 UNF, MPN 2942901) is a general-purpose spiral-flute tap with an H7 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. 3G Electric interprets demand and delivers this…
SKU 3G-OTH-230453
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
Need installation or engineering help?
Ask a question
Product Description
The OSG Spiral Flute Tap (1/2"-20 UNF, MPN 2942901) is a general-purpose spiral-flute tap with an H7 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. 3G Electric interprets demand and delivers this genuine industrial cutting tool across 14 departments — with specialist depth in combustion, pumps, and controls as an authorised distributor.
Frequently Asked Questions
What is the OSG spiral flute tap 1/2-20 UNF used for?
The OSG spiral flute tap is designed for threading blind holes in materials such as steel and stainless steel. Its spiral flute design evacuates chips upward, preventing clogging. The modified bottoming chamfer allows threading close to the bottom of the hole, making it ideal for general-purpose tapping in manufacturing and maintenance applications.
What are the specifications of the OSG spiral flute tap 1/2-20 UNF?
This OSG tap has a thread size of 1/2-20 UNF, a H7 / 2B-3B tolerance class, 3 flutes, and a modified bottoming chamfer. The manufacturer part number is 2942901. It is designed for general-purpose tapping in blind holes, providing accurate thread formation in various materials.
Where to buy the OSG spiral flute tap 1/2-20 UNF worldwide?
3G Electric supplies the OSG spiral flute tap 1/2-20 UNF worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time. We source and deliver this OSG tap to support your threading operations.
How to select the correct OSG spiral flute tap for blind holes?
For blind holes, choose a spiral flute tap like this OSG model to evacuate chips upward. Ensure the thread size (1/2-20 UNF) matches your application. The modified bottoming chamfer allows threading near the hole bottom. Verify the tolerance class (H7 / 2B-3B) meets your required fit. Always use proper cutting fluid and tap drill size.
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.
