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3G Electric
OSG 1"-8 UNC Spiral-Point STI Tap - Spiral-Point STI Taps
OSGSpiral-Point STI Taps

OSG 1"-8 UNC Spiral-Point STI Tap

<p>The OSG 1"-8 UNC Spiral-Point STI Tap (MPN 12502600) is a high-performance tap designed for threading stainless steel and other demanding materials. This tap features a spiral-point geometry that pushes chips…

SKU 3G-OTH-286984

Brand
OSG
Item
1"-8 UNC Spiral-Point STI Tap
Part Number
12502600
Category
Spiral-Point STI Taps
Available to Order
Also known as:12502600OSG
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.

Technical Specifications

OSG
Manufacturer Part Number
12502600
Type
H6, Plug Chamfer, High Speed Steel
Flute
4
UNC
1"-8

Technical Documents

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

Product Description

<p>The OSG 1"-8 UNC Spiral-Point STI Tap (MPN 12502600) is a high-performance tap designed for threading stainless steel and other demanding materials. This tap features a spiral-point geometry that pushes chips forward, reducing clogging and enabling efficient through-hole threading. With a plug chamfer and 4 flutes, it ensures smooth cutting action and excellent thread quality.</p><p>Manufactured from high-speed steel (HSS) with an H6 tolerance, this tap delivers precise threads and durability. It is ideal for automotive, aerospace, and general manufacturing applications. As a Singapore-based supplier, 3G Electric offers SGD quotes on request, handles GST for local buyers, and provides fast delivery across Singapore and Southeast Asia.</p>

Frequently Asked Questions

What is the thread size and type of this OSG tap?

This tap has a 1"-8 UNC thread size, meaning it cuts Unified National Coarse threads with 8 threads per inch. It is a spiral-point STI tap, designed for tapping stainless steel.

What is the chamfer type and number of flutes?

It has a plug chamfer (3-5 threads) and 4 flutes, which helps in chip evacuation and provides balanced cutting action.

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

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