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OSG Thread Forming Tap: 1/4"-28 UNF, H5 / 2B-3B, Modified Bottoming Chamfer - General Purpose Thread-Forming Taps
OSGGeneral Purpose Thread-Forming Taps

OSG Thread Forming Tap: 1/4"-28 UNF, H5 / 2B-3B, Modified Bottoming Chamfer

SKU 3G-OTH-237260

Brand
OSG
Item
Thread Forming Tap: 1/4"-28 UNF, H5 / 2B-3B, Modified Bottoming Chamfer
Category
General Purpose Thread-Forming Taps
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Technical Specifications

OSG
Manufacturer Part Number
1400128508
Type
H5 / 2B-3B, Modified Bottoming Chamfer, TiCN Coated Cobalt
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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, low-carbon steel, and stainless steel. The TiCN coating reduces friction and extends tool life, while the modified 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?

This tap has a thread size of 1/4"-28 UNF, with an H5 tolerance for the tap and a 2B-3B class of fit for the formed thread. It features a modified bottoming chamfer and a TiCN coated cobalt construction. The manufacturer part number is 1400128508.

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 worldwide through 3G Electric. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

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

Select a thread forming tap based on material type, thread size, and hole configuration. For blind holes, use a modified bottoming chamfer as on this OSG tap. The TiCN coating suits abrasive materials. Ensure the tap tolerance (H5) matches the required thread class (2B-3B).

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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