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3G Electric
OSG #10-32 UNF Spiral-Point Extension Tap - Spiral-Point Extension Taps
OSGSpiral-Point Extension Taps

OSG #10-32 UNF Spiral-Point Extension Tap

The OSG Extension Tap (#10-32 UNF, MPN 1294800) is a spiral-point extension tap with a plug chamfer, made from high-speed steel. It features 2 flutes and is rated H3 / 2B-3B for thread class compatibility.

SKU 3G-OTH-313637

Brand
OSG
Item
#10-32 UNF Spiral-Point Extension Tap
Part Number
1294800
Category
Spiral-Point Extension Taps
Available to Order
Also known as:1294800OSG
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Local office
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Phone
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Technical Specifications

OSG
Manufacturer Part Number
1294800
Type
H3 / 2B-3B, Plug Chamfer, High Speed Steel
Flute
2

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

Product Description

The OSG Extension Tap (#10-32 UNF, MPN 1294800) is a spiral-point extension tap with a plug chamfer, made from high-speed steel. It features 2 flutes and is rated H3 / 2B-3B for thread class compatibility.

Frequently Asked Questions

What is an OSG extension tap used for?

An OSG extension tap is used to cut internal threads in hard-to-reach or deep-hole applications. The extended shank allows threading in recessed areas where standard taps cannot reach, common in automotive, aerospace, and general machining across 14 industrial departments.

What are the specifications of the OSG #10-32 UNF extension tap?

This OSG extension tap is #10-32 UNF, H3 / 2B-3B class of fit, with 2 flutes, plug chamfer, and high-speed steel construction. The manufacturer part number is 1294800. It is designed for spiral-point (gun-nose) action to push chips ahead, ideal for through-hole threading.

Where to buy OSG extension taps worldwide?

3G Electric supplies OSG extension taps worldwide, handling full logistics and customs clearance. As a global industrial solutions provider, we source genuine OSG tooling and deliver to your facility. Contact us for pricing and lead time on this #10-32 UNF tap.

How to select the correct OSG extension tap for a job?

Select based on thread size (e.g., #10-32 UNF), class of fit (H3 / 2B-3B), and material. For deep or recessed holes, choose an extension tap with sufficient reach. OSG high-speed steel taps suit general-purpose threading in steel and aluminum. Confirm chamfer type (plug) for blind or through holes.

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-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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