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OSG Thread Forming Tap: 1/4"-28 UNF, H4 / 2B-3B, Bottoming Chamfer - General Purpose Thread-Forming Taps
OSGGeneral Purpose Thread-Forming Taps

OSG Thread Forming Tap: 1/4"-28 UNF, H4 / 2B-3B, Bottoming Chamfer

SKU 3G-OTH-238299

Brand
OSG
Item
Thread Forming Tap: 1/4"-28 UNF, H4 / 2B-3B, Bottoming Chamfer
Category
General Purpose Thread-Forming Taps
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Technical Specifications

OSG
Manufacturer Part Number
1400127800
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

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 automotive, aerospace, and general manufacturing applications where chip-free threading is required. The bottoming chamfer allows threading close to the bottom of blind holes.

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

The OSG thread forming tap has a thread size of 1/4"-28 UNF, a H4 / 2B-3B tolerance, and a bottoming chamfer. It is made from cobalt high-speed steel for durability. The manufacturer part number is 1400127800. This tap is designed for general purpose thread forming in a variety of materials.

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

You can source the OSG Thread Forming Tap 1/4"-28 UNF (MPN 1400127800) 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 OSG tap.

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

Select an OSG thread forming tap based on thread size, pitch, and tolerance class. For 1/4"-28 UNF threads, use a tap with H4 / 2B-3B tolerance. Choose a bottoming chamfer for blind holes. Ensure the tap material, such as cobalt, matches the workpiece hardness. Consult OSG's technical data for material-specific 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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