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OSG Spiral Flute Tap: 1/4"-28 UNF, H3 / 2B-3B, 3 Flute, Plug Chamfer - General Purpose Spiral-Flute Taps
OSGGeneral Purpose Spiral-Flute Taps

OSG Spiral Flute Tap: 1/4"-28 UNF, H3 / 2B-3B, 3 Flute, Plug Chamfer

The OSG Spiral Flute Tap (1/4"-28 UNF, MPN 1430205) is a general-purpose tap with a plug chamfer, TiN coated high-speed steel construction, and 3 flutes. It is specified as H3 / 2B-3B for thread class compatibility.

SKU 3G-OTH-230979

Brand
OSG
Item
Spiral Flute Tap: 1/4"-28 UNF, H3 / 2B-3B, 3 Flute, Plug Chamfer
Category
General Purpose Spiral-Flute Taps
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Technical Specifications

OSG
Manufacturer Part Number
1430205
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 (1/4"-28 UNF, MPN 1430205) is a general-purpose tap with a plug chamfer, TiN coated high-speed steel construction, and 3 flutes. It is specified as H3 / 2B-3B for thread class compatibility.

Frequently Asked Questions

What is the OSG spiral flute tap 1/4-28 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 evacuates 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 1430205 tap?

The OSG 1430205 is a 1/4-28 UNF spiral flute tap with a plug chamfer, 3 flutes, and TiN coated high speed steel. It has an H3 / 2B-3B tolerance class. This tap is designed for general purpose threading of blind holes in a variety of materials.

Where to buy OSG taps in worldwide?

You can source OSG taps, including the 1430205, through 3G Electric. As a global industrial equipment distributor, 3G Electric handles full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time.

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

For blind holes, choose a spiral flute tap like this OSG model to evacuate chips upward. Ensure the thread size (1/4-28 UNF), chamfer type (plug), and tolerance (H3 / 2B-3B) match your application. TiN coating improves wear resistance. Always match the tap to the material being threaded.

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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