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

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

OSG General Purpose Spiral-Point Taps.

SKU 3G-OTH-215486

Brand
OSG
Item
1/2"-20 UNF Spiral-Point Tap, 3B Class Fit, 3 Flute, Plug Chamfer, HSS
Category
General Purpose Spiral-Point Taps
Available to Order
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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
2881300

Technical Documents

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

Product Description

OSG General Purpose Spiral-Point Taps.

Frequently Asked Questions

What is the OSG Spiral Point Tap 1/2"-20 UNF used for?

The OSG Spiral Point Tap is designed for through-hole threading in ferrous and non-ferrous materials. Its spiral-point geometry pushes chips forward, reducing chip clogging and tap breakage. Common applications include automotive, aerospace, and general manufacturing where UNF threads are required.

What are the specifications of the OSG Spiral Point Tap 2881300?

The OSG Spiral Point Tap has a 1/2"-20 UNF thread size, 3B class fit, 3 flutes, and a plug chamfer. It is made from high-speed steel (HSS) for durability. The manufacturer part number is 2881300, and it is designed for general-purpose through-hole tapping.

Where to buy the OSG Spiral Point Tap 1/2"-20 UNF worldwide?

3G Electric supplies the OSG Spiral Point Tap 2881300 worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we source and deliver this tap to support your manufacturing operations.

How to select the correct OSG Spiral Point Tap for through-hole threading?

Select the tap based on thread size, pitch, and class fit (e.g., 1/2"-20 UNF, 3B). For through holes, a spiral-point tap with plug chamfer is ideal as it pushes chips forward. Ensure the tap material (HSS) matches the workpiece hardness. OSG taps are precision-ground for consistent thread quality.

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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This spiral-point tap is designed for through-hole threading, pushing chips forward to prevent clogging and enable faster cycles. It features a 1/2"-13 UNC thread size, 3B class fit, 3 flutes, and a plug chamfer, made from high-speed steel (HSS). Suitable for general-purpose threading in production environments
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This spiral-point tap is designed for through-hole threading applications. It features a plug chamfer and TiN-coated high-speed steel construction for wear resistance. The 3-flute design and spiral point push chips forward, preventing clogging during operation

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