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OSG 1/4"-28 UNF General Purpose Thread-Forming Tap - General Purpose Thread-Forming Taps
OSGGeneral Purpose Thread-Forming Taps

OSG 1/4"-28 UNF General Purpose Thread-Forming Tap

The OSG Thread Forming Tap (1/4"-28 UNF) is a general purpose thread-forming tap with a modified bottoming chamfer, made from cobalt. It is specified as H2 / 2B-3B (MPN 1400128200).

SKU 3G-OTH-237122

Brand
OSG
Item
1/4"-28 UNF General Purpose Thread-Forming Tap
Part Number
1400128200
Category
General Purpose Thread-Forming Taps
Available to Order
Also known as:1400128200OSG
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Technical Specifications

OSG
Manufacturer Part Number
1400128200
Type
H2 / 2B-3B, Modified Bottoming Chamfer, Cobalt

Technical Documents

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

Product Description

The OSG Thread Forming Tap (1/4"-28 UNF) is a general purpose thread-forming tap with a modified bottoming chamfer, made from cobalt. It is specified as H2 / 2B-3B (MPN 1400128200).

Frequently Asked Questions

What is OSG Thread Forming Tap 1/4"-28 UNF used for?

This OSG thread forming tap is used to create internal threads in ductile materials such as aluminum, brass, and low-carbon steel. It is ideal for applications requiring strong, chip-free threads in automotive, aerospace, and general manufacturing. The modified bottoming chamfer allows threading close to the bottom of blind holes.

What are the specifications of OSG Thread Forming Tap 1/4"-28 UNF?

This OSG tap has a 1/4"-28 UNF thread size, H2 / 2B-3B tolerance, modified bottoming chamfer, and is made of cobalt high-speed steel. The manufacturer part number is 1400128200. It is designed for general purpose thread forming in materials up to 850 °C hardness.

Where to buy OSG Thread Forming Tap 1/4"-28 UNF worldwide?

You can source the OSG Thread Forming Tap 1/4"-28 UNF from 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 item.

How to select the correct OSG thread forming tap for my application?

Select based on thread size, material, and hole type. For blind holes, use a modified bottoming chamfer like this OSG tap. Ensure the H2 / 2B-3B tolerance matches your required thread class. Cobalt taps suit harder materials. Always match the tap to the workpiece hardness and machine speed for optimal 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
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OSG Products

3G Electric supplies OSG general purpose thread-forming taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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