OSG Spiral Flute Tap: #4-40 UNC, H3 / 2B-3B, 3 Flute
SKU 3G-OTH-230879
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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 H3 / 2B-3B tolerance class, 3 flutes, and a modified bottoming chamfer. The manufacturer part number is 2911401. It is a general purpose spiral-flute tap suitable for threading blind holes in various materials.
Where to buy OSG spiral flute taps in worldwide?
You can source OSG spiral flute taps worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead times on the OSG spiral flute tap #4-40 UNC (MPN 2911401) and other OSG tooling.
How to select the correct OSG spiral flute tap for blind holes?
For blind holes, choose a spiral flute tap like the OSG #4-40 UNC with a modified bottoming chamfer to thread close to the hole bottom. Ensure the tap's tolerance class (H3 / 2B-3B) matches your required thread fit. Use proper cutting fluid and speed based on material hardness to extend tool life and achieve clean threads.
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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.
