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OSG Extension Tap: #8-32 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer - Spiral-Point Extension Taps
OSGSpiral-Point Extension Taps

OSG Extension Tap: #8-32 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer

The OSG Extension Tap (#8-32 UNC, MPN 1294301) is a spiral-point extension tap with a plug chamfer, black oxide high-speed steel construction, and a 2-flute design. It is specified as H3 / 2B-3B class of fit…

SKU 3G-OTH-313662

Brand
OSG
Item
Extension Tap: #8-32 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer
Category
Spiral-Point Extension Taps
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Technical Specifications

OSG
Manufacturer Part Number
1294301
Type
H3 / 2B-3B, Plug Chamfer, Black Oxide High Speed Steel
Flute
2
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Extension Tap (#8-32 UNC, MPN 1294301) is a spiral-point extension tap with a plug chamfer, black oxide high-speed steel construction, and a 2-flute design. It is specified as H3 / 2B-3B class of fit, suitable for threading applications requiring extended reach.

Frequently Asked Questions

What is the OSG #8-32 UNC extension tap used for?

The OSG #8-32 UNC extension tap is used for threading blind or through holes in hard-to-reach areas of metal components. Its extended length and spiral-point design push chips forward, making it ideal for automotive, aerospace, and general manufacturing applications where standard taps cannot reach.

What are the specifications of the OSG extension tap MPN 1294301?

The OSG extension tap MPN 1294301 is a #8-32 UNC spiral-point tap with a plug chamfer and 2 flutes. It is made from black oxide high-speed steel with an H3 / 2B-3B thread class. This design provides chip evacuation and durability for threading ferrous metals.

Where to buy the OSG #8-32 UNC extension tap worldwide?

You can source the OSG #8-32 UNC extension tap 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 extension tap for threading?

To select the correct OSG extension tap, match the thread size (#8-32 UNC), thread class (H3 / 2B-3B), and material (black oxide HSS) to your workpiece. For deep or obstructed holes, choose a spiral-point design with a plug chamfer. Always verify the tap's flute count and coating for chip control.

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

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