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

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

The OSG Thread Forming Tap (1/4"-28 UNF) is a general purpose thread-forming tap with a Modified Bottoming Chamfer, TiN Coated Cobalt construction, and H4 / 2B-3B tolerance class (MPN 1400128405).

SKU 3G-OTH-238095

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

OSG
Manufacturer Part Number
1400128405
Type
H4 / 2B-3B, 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 a Modified Bottoming Chamfer, TiN Coated Cobalt construction, and H4 / 2B-3B tolerance class (MPN 1400128405).

Frequently Asked Questions

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

This OSG thread forming tap creates internal threads in ductile materials like aluminum, brass, and low-carbon steel without cutting chips. It is ideal for automotive, aerospace, and general manufacturing applications requiring strong, burr-free threads in blind or through holes.

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

The tap has a 1/4"-28 UNF thread size, H4 / 2B-3B tolerance, modified bottoming chamfer, and TiN coated cobalt construction. The manufacturer part number is 1400128405. 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?

3G Electric supplies and delivers the OSG Thread Forming Tap 1/4"-28 UNF (MPN 1400128405) worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time on this precision threading tool.

How to select the correct thread forming tap for aluminum?

For aluminum, choose a thread forming tap with TiN coating like this OSG model to reduce friction and galling. Ensure the tap size matches your hole diameter and thread class (e.g., 2B-3B). Use a modified bottoming chamfer for blind holes to maximize thread depth without bottoming out.

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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