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3G Electric
OSG 7/16"-14 UNC Spiral-Point STI Tap, H3 / 2B-3B, Plug Chamfer, 3 Flute - Spiral-Point STI Taps
OSGSpiral-Point STI Taps

OSG 7/16"-14 UNC Spiral-Point STI Tap, H3 / 2B-3B, Plug Chamfer, 3 Flute

The OSG Screw Thread Insert STI Tap is a spiral-point tap designed for threading holes that will accept screw thread inserts. This 7/16"-14 UNC tap features an H3 / 2B-3B tolerance, 3 flutes, and a plug chamfer (MPN…

SKU 3G-OTH-286998

Brand
OSG
Item
7/16"-14 UNC Spiral-Point STI Tap, H3 / 2B-3B, Plug Chamfer, 3 Flute
Part Number
12500100
Category
Spiral-Point STI Taps
Available to Order
Also known as:12500100OSG
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
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Technical Specifications

OSG
Manufacturer Part Number
12500100
Type
H3 / 2B-3B, Plug Chamfer
Flute
3
UNC
7/16"-14

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

Product Description

The OSG Screw Thread Insert STI Tap is a spiral-point tap designed for threading holes that will accept screw thread inserts. This 7/16"-14 UNC tap features an H3 / 2B-3B tolerance, 3 flutes, and a plug chamfer (MPN 12500100).

Frequently Asked Questions

What is an OSG Screw Thread Insert STI Tap used for?

An OSG Screw Thread Insert STI Tap cuts internal threads in a workpiece to accept a helical coil thread insert. It is used in metalworking and manufacturing to repair or reinforce threads in softer materials like aluminum or cast iron, ensuring a durable, reusable threaded hole.

What are the specifications of the OSG STI Tap 12500100?

The OSG STI Tap 12500100 is a spiral-point, plug-chamfer tap with a 7/16"-14 UNC thread, H3 / 2B-3B tolerance, and 3 flutes. It is designed for through-hole threading and produces threads that accept screw thread inserts. 3G Electric supplies this genuine OSG tap worldwide.

Where to buy OSG STI Tap 12500100 worldwide?

3G Electric supplies the genuine OSG STI Tap 12500100 to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for a quote and lead time; we source and deliver industrial tooling across 14 departments globally.

How to select the correct STI tap size for a thread insert?

Select an STI tap that matches the thread size and pitch of the insert you plan to install. For a 7/16"-14 UNC insert, use an OSG STI tap with the same designation. The tap's H3 tolerance ensures proper fit for 2B-3B class threads. Always verify the insert manufacturer's recommended tap drill size.

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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This spiral-point STI tap is designed for cutting internal threads in through holes prior to installing helical coil thread inserts. It features a 1"-8 UNC thread, H6 tolerance, plug chamfer, 4 flutes, and is made from high-speed steel. Typical applications include thread repair and reinforcement in metal components
OSG
This spiral-point STI tap is designed for cutting internal threads in through holes prior to installing helical coil thread inserts. It features a 1"-8 UNC thread, H6 tolerance, plug chamfer, 4 flutes, and is made from high-speed steel. Typical applications include thread repair and reinforcement in metal components

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