OSG Spiral Flute Tap: 1/4"-28 UNF, H4 / 2B-3B, 3 Flute
The OSG Spiral Flute Tap (1/4"-28 UNF, MPN 2935401) is a general-purpose spiral-flute tap with a modified bottoming chamfer, 3 flutes, and H4 / 2B-3B tolerance class. 3G Electric sources this genuine OSG tool as part…
SKU 3G-OTH-230182
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Product Description
The OSG Spiral Flute Tap (1/4"-28 UNF, MPN 2935401) is a general-purpose spiral-flute tap with a modified bottoming chamfer, 3 flutes, and H4 / 2B-3B tolerance class. 3G Electric sources this genuine OSG tool as part of our industrial supply across 14 departments, with specialist expertise in combustion, pumps, and controls.
Frequently Asked Questions
What is the OSG spiral flute tap 2935401 used for?
The OSG spiral flute tap 2935401 is used for threading blind holes in materials such as steel and aluminum. Its spiral flute design evacuates chips upward, preventing clogging. The modified bottoming chamfer allows threading close to the hole bottom, making it ideal for general-purpose tapping in manufacturing and maintenance applications.
What are the specifications of the OSG tap 2935401?
The OSG tap 2935401 has a 1/4"-28 UNF thread size, H4 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. It is a general-purpose spiral flute tap designed for blind hole threading. The H4 tolerance ensures precise fit for class 2B and 3B threads in unified fine thread applications.
Where to buy the OSG spiral flute tap 2935401 worldwide?
You can source the OSG spiral flute tap 2935401 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we provide reliable sourcing for this and other OSG taps.
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., 1/4"-28 UNF) and tolerance (H4 / 2B-3B) to your application. Choose a modified bottoming chamfer for threading near the hole bottom. Ensure the tap material suits your workpiece—OSG taps are available for steel, aluminum, and other materials.
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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.















