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OSG 8011800 Spiral-Flute STI Tap - Spiral-Flute STI Taps
OSGSpiral-Flute STI Taps

OSG 8011800 Spiral-Flute STI Tap

The OSG Screw Thread Insert STI Tap (SKU 8011800, MPN 8011800) is a spiral-flute tap designed for 1/4"-28 UNF threads. It features a bottoming chamfer, three flutes, and an H2 / 2B-3B tolerance class, enabling thread…

SKU 3G-OTH-273367

Brand
OSG
Item
8011800 Spiral-Flute STI Tap
Part Number
8011800
Category
Spiral-Flute STI Taps
Available to Order
Also known as:8011800OSG
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Technical Specifications

OSG
Manufacturer Part Number
8011800
Type
H2 / 2B-3B, Bottoming Chamfer
Flute
3
UNF
1/4"-28

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

Product Description

The OSG Screw Thread Insert STI Tap (SKU 8011800, MPN 8011800) is a spiral-flute tap designed for 1/4"-28 UNF threads. It features a bottoming chamfer, three flutes, and an H2 / 2B-3B tolerance class, enabling thread cutting for screw thread inserts. 3G Electric interprets this demand and supplies this genuine OSG tool across 14 industrial departments, with specialist depth in cutting tools and controls.

Frequently Asked Questions

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

This OSG spiral-flute STI tap is used to cut internal threads in a workpiece before installing a screw thread insert. It is designed for 1/4"-28 UNF threads and is commonly used in aerospace, automotive, and general manufacturing where thread repair or reinforcement is needed.

What are the specifications of the OSG 8011800 STI tap?

The OSG 8011800 is a spiral-flute STI tap with a 1/4"-28 UNF thread size, H2 / 2B-3B tolerance, 3 flutes, and a bottoming chamfer. It is designed for tapping holes that will accept screw thread inserts, ensuring precise thread fit for insert installation.

Where to buy OSG STI taps in worldwide?

You can source the OSG 8011800 STI tap through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide locations. Contact us for availability and lead time on this and other OSG tooling.

How to select the correct OSG STI tap for thread inserts?

Select an STI tap based on the thread insert's size and pitch, such as 1/4"-28 UNF. Ensure the tap has the correct tolerance (e.g., H2 / 2B-3B) and chamfer type—bottoming for blind holes. OSG taps are designed to produce threads that match insert specifications for reliable installation.

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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