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OSG Spiral Point Tap: 1/2"-20 UNF, 3B, 3 Flute, Plug Chamfer - General Purpose Spiral-Point Taps
OSGGeneral Purpose Spiral-Point Taps

OSG Spiral Point Tap: 1/2"-20 UNF, 3B, 3 Flute, Plug Chamfer

The OSG Spiral Point Tap (1/2"-20 UNF, MPN 2881305) is a general purpose spiral-point tap with a 3B thread class, plug chamfer, and TiN coated high speed steel construction. It features 3 flutes and is designed for…

SKU 3G-OTH-215450

Brand
OSG
Item
Spiral Point Tap: 1/2"-20 UNF, 3B, 3 Flute, Plug Chamfer
Category
General Purpose Spiral-Point 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
2881305
Type
3B, Plug Chamfer, TiN Coated High Speed Steel
Flute
3

Technical Documents

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

Product Description

The OSG Spiral Point Tap (1/2"-20 UNF, MPN 2881305) is a general purpose spiral-point tap with a 3B thread class, plug chamfer, and TiN coated high speed steel construction. It features 3 flutes and is designed for through-hole threading applications.

Frequently Asked Questions

What is the OSG spiral point tap 1/2"-20 UNF used for?

This OSG spiral point tap is designed for threading blind or through holes in ferrous and non-ferrous materials. Its TiN coating reduces friction and extends tool life, making it suitable for general-purpose tapping in automotive, aerospace, and industrial manufacturing applications.

What are the specifications of the OSG 2881305 tap?

The OSG 2881305 is a 1/2"-20 UNF spiral point tap with a 3B thread class, 3 flutes, and a plug chamfer. It is made from TiN coated high-speed steel. This general-purpose tap is designed for precise threading in production environments.

Where to buy the OSG 2881305 tap worldwide?

You can source the OSG 2881305 tap 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 on this OSG spiral point tap.

How to select the correct OSG spiral point tap for a job?

Select the OSG spiral point tap based on thread size, pitch, and class (e.g., 1/2"-20 UNF 3B). Consider material hardness and hole type—spiral point taps push chips forward, ideal for through holes. TiN coating suits ferrous materials. Always match tap chamfer (plug, bottoming, or taper) to hole depth.

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-point taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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OSG Spiral Point Tap: 1/2"-20 UNF, 3B, 3 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 2881301)
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OSG Spiral Point Tap: 5/16"-24 UNF, 3B, 3 Flute, Plug Chamfer, High Speed Steel (MPN 2880900)
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OSG Spiral Point Tap: 1/2"-13 UNC, 3B, 3 Flute, Plug Chamfer, High Speed Steel (MPN 2881200)

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