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OSG #10-24 UNC Spiral-Flute Extension Tap - Spiral-Flute Extension Taps
OSGSpiral-Flute Extension Taps

OSG #10-24 UNC Spiral-Flute Extension Tap

The OSG Extension Tap (#10-24 UNC, MPN 1297000) is a spiral-flute extension tap with a plug chamfer, made from high-speed steel. It features 3 flutes and is rated H3 / 2B-3B for thread class compatibility.

SKU 3G-OTH-310983

Brand
OSG
Item
#10-24 UNC Spiral-Flute Extension Tap
Part Number
1297000
Category
Spiral-Flute Extension Taps
Available to Order
Also known as:1297000OSG
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Technical Specifications

OSG
Manufacturer Part Number
1297000
Type
H3 / 2B-3B, Plug Chamfer, High Speed Steel
Flute
3

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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Extension Tap (#10-24 UNC, MPN 1297000) is a spiral-flute extension tap with a plug chamfer, made from high-speed steel. It features 3 flutes and is rated H3 / 2B-3B for thread class compatibility.

Frequently Asked Questions

What is the OSG #10-24 UNC extension tap used for?

The OSG #10-24 UNC extension tap is used for threading blind holes in hard-to-reach areas. Its 3-flute spiral-flute design evacuates chips upward, making it ideal for through-hole and blind-hole threading in steel and other materials. The H3 tolerance ensures precise thread fit for 2B-3B classes.

What are the specifications of the OSG 1297000 extension tap?

The OSG 1297000 is a #10-24 UNC extension tap with H3 / 2B-3B tolerance, plug chamfer, and 3 flutes. It is made of high-speed steel (HSS) and features a spiral-flute design for chip evacuation. The manufacturer part number is 1297000, and it is designed for threading in confined spaces.

Where to buy the OSG 1297000 extension tap worldwide?

You can source the OSG 1297000 extension tap worldwide through 3G Electric. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we supply genuine OSG tooling to procurement teams globally.

How to select the correct OSG extension tap for UNC threads?

To select the correct OSG extension tap, match the thread size (e.g., #10-24 UNC) and tolerance class (H3 for 2B-3B fit). Choose plug chamfer for blind holes and spiral-flute design for chip removal. Verify the tap's reach length suits your application. OSG high-speed steel taps offer durability for general-purpose threading in steel.

Used in

Common applications for OSG
Aerospace — OSG STI taps for installing helical wire thread inserts in aluminum components
Automotive — OSG spiral-point taps for through-hole threading in engine blocks and transmission cases
General machining — OSG spiral-flute taps for blind-hole threading in steel and stainless steel parts
Heavy equipment repair — OSG thread-forming taps for creating threads in ductile iron and steel castings
Precision manufacturing — OSG solid carbide chucking reamers for finishing holes in hydraulic manifolds
Die and mold — OSG coolant-through solid carbide drills for deep-hole drilling in tool steels
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OSG Products

3G Electric supplies OSG spiral-flute 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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