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OSG Extension Tap: #12-24 UNC, H3 / 2B-3B, 2 Flute - Spiral-Flute Extension Taps for Multiple Materials
OSGSpiral-Flute Extension Taps for Multiple Materials

OSG Extension Tap: #12-24 UNC, H3 / 2B-3B, 2 Flute

SKU 3G-OTH-311767

Brand
OSG
Item
Extension Tap: #12-24 UNC, H3 / 2B-3B, 2 Flute
Category
Spiral-Flute Extension Taps for Multiple Materials
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Technical Specifications

OSG
Manufacturer Part Number
1652501408
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Frequently Asked Questions

What is the OSG Extension Tap #12-24 UNC used for?

The OSG Extension Tap #12-24 UNC is designed for threading blind or deep holes in multiple materials. Its spiral-flute design evacuates chips upward, making it ideal for production tapping in steel, aluminum, and cast iron. The modified bottoming chamfer allows threading close to the hole bottom.

What are the specifications of the OSG Extension Tap 1652501408?

The OSG Extension Tap 1652501408 is a #12-24 UNC spiral-flute tap with an H3 / 2B-3B thread class. It has 2 flutes and a modified bottoming chamfer. The H3 tolerance ensures precise fit for 2B or 3B thread classes. OSG is the OEM brand for this high-performance tool.

Where to buy OSG Extension Tap #12-24 UNC worldwide?

You can source the OSG Extension Tap #12-24 UNC (MPN 1652501408) 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 extension tap for a job?

Select the OSG extension tap based on thread size, pitch, and material. For #12-24 UNC, ensure the tap matches the required thread class (H3 / 2B-3B). Use a spiral-flute tap for deep or blind holes to improve chip evacuation. Always match the tap to the workpiece hardness.

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 spiral-flute extension taps for multiple materials. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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