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OSG Spiral Flute Tap: 1/4"-20 UNC, H2 / 2B-3B, 3 Flute - General Purpose Spiral-Flute Taps
OSGGeneral Purpose Spiral-Flute Taps

OSG Spiral Flute Tap: 1/4"-20 UNC, H2 / 2B-3B, 3 Flute

The OSG Spiral Flute Tap (1/4"-20 UNC, MPN 2928001) is a general-purpose tap with an H2 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. Designed for threading applications, it is supplied by 3G…

SKU 3G-OTH-230859

Brand
OSG
Item
Spiral Flute Tap: 1/4"-20 UNC, H2 / 2B-3B, 3 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
2928001
Type
H2 / 2B-3B, Modified Bottoming Chamfer
Flute
3

Technical Documents

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

Product Description

The OSG Spiral Flute Tap (1/4"-20 UNC, MPN 2928001) is a general-purpose tap with an H2 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. Designed for threading applications, it is supplied by 3G Electric across 14 industrial departments, with specialist depth in cutting tools and machining.

Frequently Asked Questions

What is the OSG spiral flute tap 2928001 used for?

The OSG spiral flute tap 2928001 is designed for threading blind holes in ferrous and non-ferrous materials. Its spiral flute design evacuates chips upward, preventing clogging. It is commonly used in automotive, aerospace, and general manufacturing applications where clean, accurate threads are required.

What are the specifications of the OSG 2928001 tap?

The OSG 2928001 is a general purpose spiral flute tap with a 1/4"-20 UNC thread size. It features 3 flutes, a modified bottoming chamfer, and an H2 / 2B-3B tolerance class. The manufacturer part number is 2928001. It is designed for threading blind holes in various materials.

Where to buy OSG taps in worldwide?

You can source OSG taps worldwide through 3G Electric, a global industrial equipment distributor established in 1990. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on the OSG 2928001 spiral flute tap.

How to select the correct OSG tap for blind holes?

For blind holes, select a spiral flute tap like the OSG 2928001, which pushes chips upward. Ensure the tap has a modified bottoming chamfer to thread close to the hole bottom. Match the thread size (e.g., 1/4"-20 UNC) and tolerance class (H2 / 2B-3B) to your application requirements.

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: 1/4"-20 UNC, H2 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2928008)
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OSG Spiral Flute Tap: 1/4"-20 UNC, H2 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2928008)
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OSG Spiral Flute Tap: 1/2"-20 UNF, H2 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2927601)
OSG Spiral Flute Tap: 1/2"-20 UNF, H2 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2927600)
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OSG Spiral Flute Tap: 1/2"-20 UNF, H2 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2927600)
OSG Spiral Flute Tap: 5/16"-18 UNC, H2 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2930600)
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OSG Spiral Flute Tap: 5/16"-18 UNC, H2 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2930600)
OSG Spiral Flute Tap: 5/16"-24 UNF, H2 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2926400)
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OSG Spiral Flute Tap: 5/16"-24 UNF, H2 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2926400)

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