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OSG Spiral Flute Tap: 1 1/2"-12 UNF, H5 / 2B-3B, 4 Flute - General Purpose Spiral-Flute Taps
OSGGeneral Purpose Spiral-Flute Taps

OSG Spiral Flute Tap: 1 1/2"-12 UNF, H5 / 2B-3B, 4 Flute

The OSG Spiral Flute Tap (1 1/2"-12 UNF) is a general-purpose tap with an H5 / 2B-3B tolerance, 4 flutes, and a modified bottoming chamfer (MPN 2946801). 3G Electric interprets your demand for this OEM-specified…

SKU 3G-OTH-230227

Brand
OSG
Item
Spiral Flute Tap: 1 1/2"-12 UNF, H5 / 2B-3B, 4 Flute
Category
General Purpose Spiral-Flute Taps
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

OSG
Manufacturer Part Number
2946801
Type
H5 / 2B-3B, Modified Bottoming Chamfer
Flute
4

Technical Documents

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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Spiral Flute Tap (1 1/2"-12 UNF) is a general-purpose tap with an H5 / 2B-3B tolerance, 4 flutes, and a modified bottoming chamfer (MPN 2946801). 3G Electric interprets your demand for this OEM-specified tool, sources it across our 14 industrial departments, and supports your operation with specialist depth in combustion, pumps, and controls.

Frequently Asked Questions

What is the OSG spiral flute tap used for?

The OSG spiral flute tap is designed for threading blind holes in materials like steel and stainless steel. Its spiral flute design pulls chips upward, preventing clogging and ensuring clean threads. It is commonly used in automotive, aerospace, and general machining applications.

What are the specifications of the OSG spiral flute tap 2946801?

This OSG tap has a thread size of 1 1/2"-12 UNF, with an H5 tolerance for 2B-3B class fit. It features 4 flutes and a modified bottoming chamfer, making it suitable for threading close to the bottom of blind holes. The manufacturer part number is 2946801.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps worldwide, handling logistics, customs, and delivery to your location. As a global industrial solutions provider, we source genuine OSG cutting tools like the spiral flute tap 2946801 and deliver them to customers across industries, ensuring compliance with international shipping requirements.

How to select the right OSG spiral flute tap for blind holes?

For blind holes, choose a spiral flute tap with a modified bottoming chamfer, like this OSG model, to thread close to the hole bottom. Match the tap tolerance (e.g., H5) to your required thread class (2B-3B). Ensure the tap material suits your workpiece—OSG taps are available for steel, stainless, and non-ferrous metals.

Used in

Common applications for OSG
Automotive engine block production — OSG micro drill bits for oil gallery and coolant passage drilling in cast iron
Medical device manufacturing — OSG micro drill bits for drilling bone screw pilot holes in stainless steel implants
Aerospace component machining — OSG micro drill bits for fastener holes in titanium alloy structural parts
Mold and die making — OSG micro drill bits for cooling channel drilling in hardened tool steel (HRC 45-50)
Electronics enclosure fabrication — OSG micro drill bits for precision holes in aluminum alloy housings (with appropriate coating selection)
General engineering job shops — OSG micro drill bits for small-diameter hole drilling in mild steel and alloy steel parts

OSG 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.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
OSG Spiral Flute Tap: 1 1/4"-12 UNF, H5 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 2945601)
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OSG Spiral Flute Tap: 1 1/4"-12 UNF, H5 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 2945601)
OSG Spiral Flute Tap: 1 1/2"-6 UNC, H6 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 2948301)
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OSG Spiral Flute Tap: 1 1/2"-6 UNC, H6 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 2948301)
OSG Spiral Flute Tap: 1 3/8"-6 UNC, H6 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 2948001)
OSG
OSG Spiral Flute Tap: 1 3/8"-6 UNC, H6 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 2948001)
OSG Spiral Flute Tap: 1 1/4"-7 UNC, H6 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 2947701)
OSG
OSG Spiral Flute Tap: 1 1/4"-7 UNC, H6 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 2947701)
OSG Spiral Flute Tap: 1 1/8"-7 UNC, H6 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 2947201)
OSG
OSG Spiral Flute Tap: 1 1/8"-7 UNC, H6 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 2947201)
OSG Spiral Flute Tap: 1 1/8"-12 UNF, H5 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 2945001)
OSG
OSG Spiral Flute Tap: 1 1/8"-12 UNF, H5 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 2945001)

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