OSG Spiral Flute Tap: #4-40 UNC, H2 / 2B-3B, 3 Flute
SKU 3G-OTH-229840
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Frequently Asked Questions
What is the OSG spiral flute tap #4-40 UNC used for?
The OSG spiral flute tap #4-40 UNC is designed for threading blind holes in ferrous and non-ferrous materials. Its spiral flute design lifts chips upward, preventing clogging and ensuring clean threads. It is commonly used in automotive, aerospace, and general manufacturing applications where precise internal threads are required.
What are the specifications of the OSG spiral flute tap #4-40 UNC?
The OSG spiral flute tap #4-40 UNC has a thread size of #4-40 UNC, a H2 / 2B-3B tolerance class, 3 flutes, and a modified bottoming chamfer. The manufacturer part number is 2906400. It is a general purpose spiral-flute tap suitable for threading blind holes in various materials.
Where to buy OSG spiral flute tap #4-40 UNC worldwide?
You can source the OSG spiral flute tap #4-40 UNC worldwide through 3G Electric. As a global industrial equipment distributor, 3G Electric handles full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this OSG tap.
How to select the correct OSG spiral flute tap for blind holes?
To select the correct OSG spiral flute tap for blind holes, match the thread size (e.g., #4-40 UNC), tolerance class (H2 / 2B-3B), and chamfer type (modified bottoming) to your application. Spiral flute taps are ideal for blind holes as they evacuate chips upward. Always verify material compatibility and consult OSG's technical data for optimal performance.
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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.















