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OSG 10801100 Spiral-Flute STI Tap - Spiral-Flute STI Taps
OSGSpiral-Flute STI Taps

OSG 10801100 Spiral-Flute STI Tap

The OSG Screw Thread Insert STI Tap is a spiral-flute tap designed for threading holes to accept screw thread inserts. This specific model, MPN 10801100, features a 9/16"-18 UNF thread size, H4 / 2B-3B tolerance…

SKU 3G-OTH-273391

Brand
OSG
Item
10801100 Spiral-Flute STI Tap
Part Number
10801100
Category
Spiral-Flute STI Taps
Available to Order
Also known as:10801100OSG
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Technical Specifications

OSG
Manufacturer Part Number
10801100
Type
H4 / 2B-3B, Bottoming Chamfer
Flute
4
UNF
9/16"-18

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

Product Description

The OSG Screw Thread Insert STI Tap is a spiral-flute tap designed for threading holes to accept screw thread inserts. This specific model, MPN 10801100, features a 9/16"-18 UNF thread size, H4 / 2B-3B tolerance class, 4 flutes, and a bottoming chamfer for threading to the bottom of blind holes.

Frequently Asked Questions

What is an OSG spiral-flute STI tap used for?

An OSG spiral-flute STI tap is used to cut internal threads for screw thread inserts in metalwork. It is designed for bottoming chamfer applications, producing threads that accept helical coil inserts in materials such as steel and aluminum. The spiral flute helps evacuate chips upward, making it suitable for through-hole and blind-hole threading.

What are the specifications of the OSG 10801100 STI tap?

The OSG 10801100 is a spiral-flute STI tap with a 9/16"-18 UNF thread size, H4 / 2B-3B tolerance, and 4 flutes. It has a bottoming chamfer for threading near the bottom of blind holes. The tap is designed for use with screw thread inserts and is made by OSG, a leading cutting tool manufacturer.

Where to buy OSG STI taps worldwide?

You can source OSG STI taps 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 times. 3G Electric supplies genuine OSG cutting tools for manufacturing and maintenance applications.

How to select the correct OSG STI tap for a UNF thread?

To select the correct OSG STI tap, match the tap thread size and pitch to the insert's requirements. For a 9/16"-18 UNF thread, use an STI tap with H4 / 2B-3B tolerance. Choose a spiral-flute design for chip evacuation in blind holes. Verify the chamfer type—bottoming for threads near hole bottoms—and ensure the tap is for the correct material.

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-flute 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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