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OSG Thread Forming Tap: 1/4"-28 UNF, H8 / 2B, Modified Bottoming Chamfer - General Purpose Thread-Forming Taps
OSGGeneral Purpose Thread-Forming Taps

OSG Thread Forming Tap: 1/4"-28 UNF, H8 / 2B, Modified Bottoming Chamfer

The OSG Thread Forming Tap (1/4"-28 UNF) is a general purpose thread-forming tap with an H8 / 2B tolerance, modified bottoming chamfer, and TiN coated cobalt construction (MPN 1400128805). This tool is designed for…

SKU 3G-OTH-237883

Brand
OSG
Item
Thread Forming Tap: 1/4"-28 UNF, H8 / 2B, Modified Bottoming Chamfer
Category
General Purpose Thread-Forming Taps
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Technical Specifications

OSG
Manufacturer Part Number
1400128805
Type
H8 / 2B, Modified Bottoming Chamfer, TiN Coated Cobalt
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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 an H8 / 2B tolerance, modified bottoming chamfer, and TiN coated cobalt construction (MPN 1400128805). This tool is designed for forming internal threads in ductile materials without cutting, reducing chip issues and improving thread strength.

Frequently Asked Questions

What is the 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 high-speed production environments where chip evacuation is a concern, as it forms threads by displacing material rather than cutting it.

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

This tap has a thread size of 1/4"-28 UNF, a thread limit of H8 / 2B, and a modified bottoming chamfer. It features a TiN coated cobalt construction for wear resistance. The manufacturer part number is 1400128805, and the SKU is 33WJ36.

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

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

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

Select based on thread size, pitch, and material. For ductile materials like aluminum, use a forming tap with a TiN coating for longer tool life. Ensure the thread limit (e.g., H8 / 2B) matches your required fit class. Consult OSG's technical data for specific material recommendations.

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 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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