OSG Spiral Flute Tap: #4-40 UNC, H5 / 2B, 3 Flute, Modified Bottoming Chamfer (MPN 2916608)
SKU 3G-OTH-231223
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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 in deep or blind holes. Common applications include automotive, aerospace, and general manufacturing where precise internal threads are required.
What are the specifications of the OSG spiral flute tap #4-40 UNC?
This OSG tap has a #4-40 UNC thread size, H5 tolerance for 2B class fit, 3 flutes, and a modified bottoming chamfer. The manufacturer part number is 2916608. It is a general purpose spiral-flute tap suitable for blind hole threading in a range of 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 this and other OSG cutting tools.
How to select the right OSG tap for blind holes?
For blind holes, choose a spiral flute tap like this OSG #4-40 UNC model, which pushes chips out of the hole. Ensure the chamfer type matches your thread depth: a modified bottoming chamfer allows threading close to the hole bottom. Always match tap tolerance (H5) to the required thread class (2B).
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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.
