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OSG 5/8"-11 UNC Spiral-Point STI Tap, H4 / 2B-3B, Plug Chamfer, 3 Flutes - Spiral-Point STI Taps
OSGSpiral-Point STI Taps

OSG 5/8"-11 UNC Spiral-Point STI Tap, H4 / 2B-3B, Plug Chamfer, 3 Flutes

The OSG Screw Thread Insert STI Tap is a spiral-point tap designed for threading holes to accept screw thread inserts. This 5/8"-11 UNC tap features an H4 / 2B-3B tolerance, a plug chamfer, and 3 flutes (MPN…

SKU 3G-OTH-287000

Brand
OSG
Item
5/8"-11 UNC Spiral-Point STI Tap, H4 / 2B-3B, Plug Chamfer, 3 Flutes
Part Number
12501400
Category
Spiral-Point STI Taps
Available to Order
Also known as:12501400OSG
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Technical Specifications

OSG
Manufacturer Part Number
12501400
Type
H4 / 2B-3B, Plug Chamfer
Flute
3
UNC
5/8"-11

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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 to accept screw thread inserts. This 5/8"-11 UNC tap features an H4 / 2B-3B tolerance, a plug chamfer, and 3 flutes (MPN 12501400). 3G Electric interprets your demand for this precision threading tool, sources it from OSG, and supports your application with specialist expertise across 14 industrial departments.

Frequently Asked Questions

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

An OSG Screw Thread Insert STI Tap is used to cut internal threads in pre-drilled holes for installing helical wire thread inserts. It is commonly applied in aerospace, automotive, and industrial maintenance to repair or reinforce threads in aluminum, cast iron, and steel components.

What are the specifications of the OSG STI Tap 12501400?

The OSG STI Tap 12501400 is a spiral-point design with a 5/8"-11 UNC thread, H4 / 2B-3B tolerance, 3 flutes, and a plug chamfer. It is designed for thread insert installation and is manufactured by OSG under MPN 12501400.

Where to buy OSG STI Tap 12501400 worldwide?

You can source the OSG STI Tap 12501400 worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to select the correct OSG STI tap size?

To select the correct OSG STI tap, match the tap thread size and pitch to the insert's internal thread requirement. For example, the 5/8"-11 UNC STI tap is used with corresponding thread inserts. Always verify the hole size and tolerance class (e.g., H4 / 2B-3B) per OSG recommendations.

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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