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

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

The OSG Spiral Flute Tap (MPN 2986300) is a general-purpose spiral-flute tap in 1/2"-20 UNF size, featuring a 2B class of fit, bottoming chamfer, 3 flutes, and high-speed steel construction. We interpret your…

SKU 3G-OTH-230234

Brand
OSG
Item
Spiral Flute Tap: 1/2"-20 UNF, 2B, 3 Flute, Bottoming Chamfer
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
2986300
Type
2B, Bottoming Chamfer, High Speed Steel
Flute
3

Technical Documents

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

Product Description

The OSG Spiral Flute Tap (MPN 2986300) is a general-purpose spiral-flute tap in 1/2"-20 UNF size, featuring a 2B class of fit, bottoming chamfer, 3 flutes, and high-speed steel construction. We interpret your threading requirements, source this OSG tap, and support your operations across 14 industrial departments — with specialist depth in combustion, pumps, and controls as an authorised distributor.

Frequently Asked Questions

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

The OSG spiral flute tap is designed for threading blind holes in materials like steel and aluminum. Its spiral flute design evacuates chips upward, preventing clogging and ensuring clean threads. It is commonly used in automotive, aerospace, and general manufacturing applications where precise internal threading is required.

What are the specifications of the OSG spiral flute tap MPN 2986300?

The OSG spiral flute tap has a thread size of 1/2"-20 UNF, a 2B class of fit, 3 flutes, a bottoming chamfer, and is made from high-speed steel. The manufacturer part number is 2986300. It is designed for threading blind holes and is suitable for general-purpose industrial applications.

Where to buy the OSG spiral flute tap 1/2"-20 UNF worldwide?

You can source the OSG spiral flute tap MPN 2986300 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; we provide reliable sourcing for this OSG tap.

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

For blind holes, choose a spiral flute tap like the OSG 1/2"-20 UNF with a bottoming chamfer to thread close to the hole bottom. Ensure the tap matches the thread size, pitch, and material (high-speed steel for general use). Use proper cutting fluid and follow manufacturer speed recommendations for best results.

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, 2B, 3 Flute, Bottoming Chamfer, High Speed Steel (MPN 2985600)
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OSG Spiral Flute Tap: 1/4"-20 UNC, 2B, 3 Flute, Bottoming Chamfer, High Speed Steel (MPN 2985600)
OSG Spiral Flute Tap: 1/4"-20 UNC, 2B, 3 Flute, Bottoming Chamfer, TiN Coated High Speed Steel (MPN 2985605)
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OSG Spiral Flute Tap: 1/4"-20 UNC, 2B, 3 Flute, Bottoming Chamfer, TiN Coated High Speed Steel (MPN 2985605)
General purpose spiral-flute tap for threading blind holes in materials such as steel and aluminum. Features a bottoming chamfer for threading to the bottom of the hole, and a 3-flute design with spiral flutes that lift chips upward to prevent clogging. Made from high-speed steel (HSS) with a 2B thread class fit
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General purpose spiral-flute tap for threading blind holes in materials such as steel and aluminum. Features a bottoming chamfer for threading to the bottom of the hole, and a 3-flute design with spiral flutes that lift chips upward to prevent clogging. Made from high-speed steel (HSS) with a 2B thread class fit
OSG Spiral Flute Tap: 1/2"-13 UNC, 2B, 3 Flute, Bottoming Chamfer, High Speed Steel (MPN 2986200)
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OSG Spiral Flute Tap: 1/2"-13 UNC, 2B, 3 Flute, Bottoming Chamfer, High Speed Steel (MPN 2986200)
OSG Spiral Flute Tap: 1/2"-20 UNF, 2B, 3 Flute, Bottoming Chamfer, Black Oxide High Speed Steel (MPN 2986301)
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OSG Spiral Flute Tap: 1/2"-20 UNF, 2B, 3 Flute, Bottoming Chamfer, Black Oxide High Speed Steel (MPN 2986301)
OSG Spiral Flute Tap: 3/8"-24 UNF, 2B, 3 Flute, Bottoming Chamfer, High Speed Steel (MPN 2986100)
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OSG Spiral Flute Tap: 3/8"-24 UNF, 2B, 3 Flute, Bottoming Chamfer, High Speed Steel (MPN 2986100)

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