OSG Spiral Flute Tap: 1/2"-20 UNF, H3 / 2B-3B, 3 Flute, Plug Chamfer
The OSG Spiral Flute Tap (MPN 1432400) is a general-purpose spiral-flute tap in 1/2"-20 UNF size, featuring a H3 / 2B-3B tolerance, 3-flute design, plug chamfer, and high-speed steel construction. 3G Electric…
SKU 3G-OTH-230400
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Product Description
The OSG Spiral Flute Tap (MPN 1432400) is a general-purpose spiral-flute tap in 1/2"-20 UNF size, featuring a H3 / 2B-3B tolerance, 3-flute design, plug chamfer, and high-speed steel construction. 3G Electric interprets demand and sources this genuine OSG tap across 14 industrial departments — with specialist depth in combustion, pumps, and controls as an authorised distributor — ensuring you get the right answer, not just a catalog.
Frequently Asked Questions
What is the OSG spiral flute tap 1/2-20 UNF used for?
The OSG spiral flute tap is used for threading blind holes in materials such as steel and aluminum. Its spiral flute design evacuates chips upward, preventing clogging. It is common in automotive and general manufacturing applications requiring UNF threads.
What are the specifications of the OSG spiral flute tap 1/2-20 UNF?
This OSG tap has a 1/2-20 UNF thread size, H3 / 2B-3B tolerance, 3 flutes, and a plug chamfer. It is made of high-speed steel (HSS) and is designed for general purpose threading. The manufacturer part number is 1432400.
Where to buy OSG spiral flute taps in worldwide?
You can source OSG spiral flute taps through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide locations. Contact us for availability and lead time on this item.
How to select the correct OSG tap for UNF threads?
Select an OSG tap by matching the thread size (e.g., 1/2-20 UNF), tolerance class (H3 for 2B-3B fit), and material. For blind holes, use a spiral flute tap with plug chamfer. Always verify the tap's HSS grade suits your workpiece hardness.
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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.















