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

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

The OSG Extension Tap (#8-32 UNC, MPN 1294300) 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 tolerance. 3G Electric sources…

SKU 3G-OTH-313553

Brand
OSG
Item
#8-32 UNC Spiral-Point Extension Tap, H3 / 2B-3B, Plug Chamfer, 2 Flute, HSS
Part Number
1294300
Category
Spiral-Point Extension Taps
Available to Order
Also known as:1294300OSG
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Technical Specifications

OSG
Manufacturer Part Number
1294300
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 (#8-32 UNC, MPN 1294300) 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 tolerance. 3G Electric sources this genuine OSG tool across 14 industrial departments, with specialist expertise in cutting tools and precision machining.

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, while the spiral-point design pushes chips forward for efficient chip evacuation in through-hole threading.

What are the specifications of the OSG #8-32 UNC extension tap?

This OSG extension tap is #8-32 UNC thread size, with H3 / 2B-3B tolerance, 2 flutes, plug chamfer, and made of high-speed steel. The manufacturer part number is 1294300. It is designed for through-hole threading in steel and non-ferrous materials.

Where to buy OSG extension taps worldwide?

3G Electric supplies OSG extension taps worldwide. As a global industrial sourcing partner, we handle full logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time on the OSG #8-32 UNC extension tap (MPN 1294300).

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

Select an OSG extension tap based on thread size (e.g., #8-32 UNC), material (high-speed steel for general use), chamfer type (plug for through-holes), and flute count (2 flutes for chip clearance). Match the tap tolerance (H3) to the required thread class (2B or 3B).

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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