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OSG Thread Forming Tap: 1/4"-28 UNF, H3 / 2B-3B, Modified Bottoming Chamfer - General Purpose Thread-Forming Taps
OSGGeneral Purpose Thread-Forming Taps

OSG Thread Forming Tap: 1/4"-28 UNF, H3 / 2B-3B, Modified Bottoming Chamfer

The OSG Thread Forming Tap (1/4"-28 UNF, MPN 1400128301) is a general purpose thread-forming tap with an H3 / 2B-3B tolerance, modified bottoming chamfer, and black oxide cobalt finish. 3G Electric sources this and…

SKU 3G-OTH-238082

Brand
OSG
Item
Thread Forming Tap: 1/4"-28 UNF, H3 / 2B-3B, Modified Bottoming Chamfer
Category
General Purpose Thread-Forming Taps
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Technical Specifications

OSG
Manufacturer Part Number
1400128301
Type
H3 / 2B-3B, Modified Bottoming Chamfer, Black Oxide Cobalt
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Thread Forming Tap (1/4"-28 UNF, MPN 1400128301) is a general purpose thread-forming tap with an H3 / 2B-3B tolerance, modified bottoming chamfer, and black oxide cobalt finish. 3G Electric sources this and other precision tooling across 14 industrial departments, with specialist expertise in combustion, pumps, and controls to ensure you get the right solution.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

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 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 the OSG Thread Forming Tap 1/4"-28 UNF?

This tap has a thread size of 1/4"-28 UNF, with a thread limit of H3 / 2B-3B. It features a modified bottoming chamfer and a black oxide cobalt finish for heat resistance and lubricity. The manufacturer part number is 1400128301. It is designed for general purpose thread forming in ferrous and non-ferrous 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 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; we supply genuine OSG tooling for manufacturing operations.

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 or steel, use a forming tap with a modified bottoming chamfer for blind holes. Ensure the thread limit (e.g., H3 / 2B-3B) matches your required fit class. OSG taps with black oxide cobalt coating suit higher-speed operations and reduce galling.

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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