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

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

The OSG Spiral Flute Tap (1/2"-20 UNF, MPN 1432405) is a general-purpose tap with a TiN-coated high-speed steel construction, featuring a plug chamfer and three flutes. It is specified as H3 / 2B-3B class, designed…

SKU 3G-OTH-230195

Brand
OSG
Item
Spiral Flute Tap: 1/2"-20 UNF, H3 / 2B-3B, 3 Flute, Plug Chamfer
Category
General Purpose Spiral-Flute Taps
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Technical Specifications

OSG
Manufacturer Part Number
1432405
Type
H3 / 2B-3B, Plug Chamfer, TiN Coated High Speed Steel
Flute
3
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Spiral Flute Tap (1/2"-20 UNF, MPN 1432405) is a general-purpose tap with a TiN-coated high-speed steel construction, featuring a plug chamfer and three flutes. It is specified as H3 / 2B-3B class, designed for threading applications requiring precise internal thread tolerances.

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

This OSG spiral flute tap is designed for threading blind holes in materials such as steel and aluminum. The spiral flute design pulls chips upward, preventing clogging. It is commonly used in automotive, aerospace, and general manufacturing applications where precise UNF threads are required.

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

This tap has a 1/2-20 UNF thread size, H3 / 2B-3B tolerance, 3 flutes, and a plug chamfer. It is made from TiN coated high speed steel. The manufacturer part number is 1432405. It is designed for general purpose threading of blind holes.

Where to buy OSG spiral flute taps worldwide?

You can source OSG spiral flute taps 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 and other OSG tooling.

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

For blind holes, choose a spiral flute tap with a plug chamfer, like this OSG model. The spiral flutes evacuate chips upward. Ensure the tap tolerance (e.g., H3 / 2B-3B) matches your required thread class. Use a TiN coating for improved wear resistance in ferrous materials.

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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