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OSG Screw Thread Insert STI Tap: Straight Fute, 3/4"-10 UNC, H5 / 2B-3B, 4 Flute - General Purpose STI Taps
OSGGeneral Purpose STI Taps

OSG Screw Thread Insert STI Tap: Straight Fute, 3/4"-10 UNC, H5 / 2B-3B, 4 Flute

The OSG Screw Thread Insert STI Tap is a general-purpose STI tap with a straight flute design, specified as 3/4"-10 UNC, H5 / 2B-3B, 4 flute, bottoming chamfer (MPN 12603400). 3G Electric sources this genuine OSG…

SKU 3G-OTH-262088

Brand
OSG
Item
Screw Thread Insert STI Tap: Straight Fute, 3/4"-10 UNC, H5 / 2B-3B, 4 Flute
Category
General Purpose STI Taps
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Technical Specifications

OSG
Manufacturer Part Number
12603400
Type
H5 / 2B-3B, Bottoming Chamfer
Flute
4
UNC
3/4"-10
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Screw Thread Insert STI Tap is a general-purpose STI tap with a straight flute design, specified as 3/4"-10 UNC, H5 / 2B-3B, 4 flute, bottoming chamfer (MPN 12603400). 3G Electric sources this genuine OSG tool for customers across 14 industrial departments, with specialist expertise in combustion, pumps and controls ensuring accurate specification and support.

Frequently Asked Questions

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

This OSG STI tap cuts internal threads in metal to accept screw thread inserts (Heli-Coil style). It is used in automotive, aerospace, and general manufacturing for repairing or reinforcing tapped holes in aluminum, steel, and cast iron.

What are the specifications of the OSG STI Tap 12603400?

The OSG STI tap has a 3/4"-10 UNC thread, H5 / 2B-3B tolerance, 4 straight flutes, and a bottoming chamfer. It is designed for general purpose threading of holes that will receive screw thread inserts. The manufacturer part number is 12603400.

Where to buy OSG STI Taps worldwide?

3G Electric supplies OSG STI taps worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time on the OSG 12603400 tap.

How to select the correct STI tap size?

Select an STI tap marked with the same thread size and pitch as the insert you will install. For a 3/4"-10 UNC insert, use this OSG STI tap. Always match the tap tolerance (H5) to the required thread class (2B or 3B) for proper fit.

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 general purpose 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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