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OSG Screw Thread Insert STI Tap: Spiral Point, 5/8"-11 UNC, H4 / 2B-3B, 3 Flute - Spiral-Point STI Taps
OSGSpiral-Point STI Taps

OSG Screw Thread Insert STI Tap: Spiral Point, 5/8"-11 UNC, H4 / 2B-3B, 3 Flute

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
Screw Thread Insert STI Tap: Spiral Point, 5/8"-11 UNC, H4 / 2B-3B, 3 Flute
Category
Spiral-Point STI Taps
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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
Automotive engine block production — OSG micro drill bits for oil gallery and coolant passage drilling in cast iron
Medical device manufacturing — OSG micro drill bits for drilling bone screw pilot holes in stainless steel implants
Aerospace component machining — OSG micro drill bits for fastener holes in titanium alloy structural parts
Mold and die making — OSG micro drill bits for cooling channel drilling in hardened tool steel (HRC 45-50)
Electronics enclosure fabrication — OSG micro drill bits for precision holes in aluminum alloy housings (with appropriate coating selection)
General engineering job shops — OSG micro drill bits for small-diameter hole drilling in mild steel and alloy steel parts

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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