OSG Spiral Flute Tap: 1 1/4"-12 UNF, H5 / 2B-3B, 4 Flute
The OSG Spiral Flute Tap (1 1/4"-12 UNF) is a general purpose spiral-flute tap with an H5 / 2B-3B tolerance, 4 flutes, and a modified bottoming chamfer (MPN 2945601). 3G Electric interprets demand and delivers this…
SKU 3G-OTH-230843
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Product Description
The OSG Spiral Flute Tap (1 1/4"-12 UNF) is a general purpose spiral-flute tap with an H5 / 2B-3B tolerance, 4 flutes, and a modified bottoming chamfer (MPN 2945601). 3G Electric interprets demand and delivers this genuine industrial cutting tool across 14 departments — and far more — with specialist depth in combustion, pumps and controls as a trust anchor.
Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.
Frequently Asked Questions
What is the OSG spiral flute tap used for?
The OSG spiral flute tap is used for threading blind holes in materials such as steel and stainless steel. Its spiral flute design pulls chips upward and out of the hole, preventing chip clogging and ensuring clean threads. It is commonly used in automotive, aerospace, and general manufacturing applications.
What are the specifications of the OSG spiral flute tap?
This OSG spiral flute tap has a thread size of 1 1/4"-12 UNF, with an H5 tolerance for 2B-3B class fit. It features 4 flutes and a modified bottoming chamfer, allowing threading close to the bottom of blind holes. The manufacturer part number is 2945601.
Where to buy the OSG spiral flute tap worldwide?
You can source the OSG spiral flute tap 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 this item.
How to select the correct OSG spiral flute tap?
Select the OSG spiral flute tap based on thread size, tolerance class, and chamfer type. For blind holes, use a modified bottoming chamfer to thread close to the bottom. Match the H5 tolerance to your required thread class (2B-3B). Ensure the tap material suits your workpiece, such as high-speed steel for general use.
Used in
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.














