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OSG Spiral Flute Tap: 1/2"-20 UNF, H3 / 2B-3B, 3 Flute, Bottoming Chamfer - General Purpose Spiral-Flute Taps
OSGGeneral Purpose Spiral-Flute Taps

OSG Spiral Flute Tap: 1/2"-20 UNF, H3 / 2B-3B, 3 Flute, Bottoming Chamfer

The OSG Spiral Flute Tap (1/2"-20 UNF) is a general-purpose spiral-flute tap with a bottoming chamfer, made from high-speed steel. It features an H3 / 2B-3B tolerance class and 3 flutes, identified by MPN 1432500.

SKU 3G-OTH-231010

Brand
OSG
Item
Spiral Flute Tap: 1/2"-20 UNF, H3 / 2B-3B, 3 Flute, Bottoming Chamfer
Category
General Purpose Spiral-Flute Taps
Available to Order
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

OSG
Manufacturer Part Number
1432500
Type
H3 / 2B-3B, 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 (1/2"-20 UNF) is a general-purpose spiral-flute tap with a bottoming chamfer, made from high-speed steel. It features an H3 / 2B-3B tolerance class and 3 flutes, identified by MPN 1432500.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is an OSG spiral flute tap used for?

An OSG spiral flute tap is used for threading blind holes in materials like steel and aluminum. Its spiral design pushes chips upward, preventing clogging and ensuring clean threads. This 1/2"-20 UNF bottoming chamfer tap is ideal for reaching the bottom of a hole.

What are the specifications of the OSG 1/2"-20 UNF spiral flute tap?

This OSG tap has a 1/2"-20 UNF thread, H3 / 2B-3B tolerance, 3 flutes, and a bottoming chamfer. It is made from high-speed steel (HSS) and is designed for general-purpose threading. The manufacturer part number is 1432500.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps worldwide. We source and deliver genuine industrial cutting tools, handling logistics and customs for global orders. Contact us for availability and lead time on this 1/2"-20 UNF spiral flute tap or other OSG tooling needs.

How to select the right OSG tap for a blind hole?

For blind holes, choose a spiral flute tap like this OSG bottoming chamfer model. The spiral flutes evacuate chips upward, preventing packing. Ensure the tap's thread size (1/2"-20 UNF) and tolerance (H3 / 2B-3B) match your application. Use proper cutting fluid and speed for HSS tools.

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: 5/8"-18 UNF, H3 / 2B-3B, 4 Flute, Bottoming Chamfer, High Speed Steel (MPN 1433300)
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OSG Spiral Flute Tap: 7/16"-20 UNF, H3 / 2B-3B, 3 Flute, Bottoming Chamfer, High Speed Steel (MPN 1431700)
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OSG Spiral Flute Tap: 7/16"-20 UNF, H3 / 2B-3B, 3 Flute, Bottoming Chamfer, High Speed Steel (MPN 1431700)
OSG Spiral Flute Tap: 3/4"-16 UNF, H3 / 2B-3B, 4 Flute, Bottoming Chamfer, High Speed Steel (MPN 1434100)
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OSG Spiral Flute Tap: 3/8"-24 UNF, H3 / 2B-3B, 3 Flute, Bottoming Chamfer, High Speed Steel (MPN 1431100)
OSG Spiral Flute Tap: 3/4"-10 UNC, H3 / 2B-3B, 4 Flute, Bottoming Chamfer, High Speed Steel (MPN 1433700)
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OSG Spiral Flute Tap: 3/4"-10 UNC, H3 / 2B-3B, 4 Flute, Bottoming Chamfer, High Speed Steel (MPN 1433700)
OSG Spiral Flute Tap: 1/2"-13 UNC, H3 / 2B-3B, 3 Flute, Bottoming Chamfer, High Speed Steel (MPN 1432100)
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OSG Spiral Flute Tap: 1/2"-13 UNC, H3 / 2B-3B, 3 Flute, Bottoming Chamfer, High Speed Steel (MPN 1432100)

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