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

OSG #10-32 UNF Spiral-Flute Extension Tap

The OSG Extension Tap (#10-32 UNF, MPN 1297600) is a spiral-flute extension tap with a plug chamfer, made from high-speed steel. It features an H3 / 2B-3B tolerance class and 3 flutes, designed for threading…

SKU 3G-OTH-310967

Brand
OSG
Item
#10-32 UNF Spiral-Flute Extension Tap
Part Number
1297600
Category
Spiral-Flute Extension Taps
Available to Order
Also known as:1297600OSG
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Local office
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Phone
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Technical Specifications

OSG
Manufacturer Part Number
1297600
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 (#10-32 UNF, MPN 1297600) is a spiral-flute extension tap with a plug chamfer, made from high-speed steel. It features an H3 / 2B-3B tolerance class and 3 flutes, designed for threading applications requiring extended reach.

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 #10-32 UNF size with plug chamfer and spiral-flute design is ideal for through-hole threading in metalworking, automotive, and general manufacturing where standard taps cannot reach.

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

This OSG extension tap is #10-32 UNF thread size, H3 / 2B-3B fit, 3-flute, plug chamfer, made of high-speed steel. The spiral-flute design aids chip evacuation in deep-hole tapping. Manufacturer part number is 1297600.

Where to buy OSG extension taps worldwide?

3G Electric supplies OSG extension taps worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on the #10-32 UNF spiral-flute tap (MPN 1297600) and other OSG tooling.

How to select the correct OSG extension tap for deep-hole threading?

Select an OSG extension tap based on thread size (e.g., #10-32 UNF), chamfer type (plug for through-holes), flute design (spiral for chip evacuation), and reach length. Ensure the tap's H3 tolerance matches your required thread class (2B-3B). Consult OSG's technical data for material-specific speeds.

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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