OSG Spiral Flute Tap: #4-40 UNC, H5 / 2B, 3 Flute, Modified Bottoming Chamfer (MPN 2916600)
SKU 3G-OTH-230936
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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, a H5 tolerance for 2B class fit, 3 flutes, and a modified bottoming chamfer. The manufacturer part number is 2916600. It is a general purpose tap suitable for blind hole threading in a variety 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 time on the OSG spiral flute tap #4-40 UNC (MPN 2916600).
How to select the right OSG spiral flute tap for blind holes?
To select the right OSG spiral flute tap for blind holes, match the thread size (e.g., #4-40 UNC) and tolerance (H5 for 2B fit) to your application. Choose a modified bottoming chamfer for threading close to the hole bottom. Ensure the tap material suits your workpiece—OSG taps are designed for ferrous and non-ferrous metals.
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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.















