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OSG Screw Thread Insert STI Tap: Straight Fute, 1/4"-28 UNF, H2 / 2B-3B, 3 Flute - General Purpose STI Taps
OSGGeneral Purpose STI Taps

OSG Screw Thread Insert STI Tap: Straight Fute, 1/4"-28 UNF, H2 / 2B-3B, 3 Flute

The OSG Screw Thread Insert STI Tap (SKU 3G-OTH-262002) is a General Purpose STI Tap with a Straight Flute design, sized 1/4"-28 UNF. It features a Plug Chamfer, 3 flutes, and is rated H2 / 2B-3B (MPN 1806600).

SKU 3G-OTH-262002

Brand
OSG
Item
Screw Thread Insert STI Tap: Straight Fute, 1/4"-28 UNF, H2 / 2B-3B, 3 Flute
Part Number
1806600
Category
General Purpose STI Taps
Available to Order
Also known as:1806600OSG
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Technical Specifications

OSG
Manufacturer Part Number
1806600
Type
H2 / 2B-3B, Plug 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 3G-OTH-262002) is a General Purpose STI Tap with a Straight Flute design, sized 1/4"-28 UNF. It features a Plug Chamfer, 3 flutes, and is rated H2 / 2B-3B (MPN 1806600).

Frequently Asked Questions

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

The OSG Screw Thread Insert STI Tap is used to cut internal threads for helical coil inserts in metal parts. It is ideal for aerospace, automotive, and general manufacturing where thread repair or reinforcement is needed. The plug chamfer and 3-flute design provide balanced cutting action for consistent thread quality.

What are the specifications of the OSG STI Tap 1/4"-28 UNF?

This OSG STI Tap has a 1/4"-28 UNF thread size, H2 / 2B-3B tolerance, 3 flutes, and a plug chamfer. The manufacturer part number is 1806600. It is designed for general purpose tapping of threads for screw thread inserts, ensuring proper fit for STI coils.

Where to buy OSG STI Tap 1/4"-28 UNF worldwide?

You can source the OSG STI Tap 1/4"-28 UNF worldwide through 3G Electric. We handle full logistics, customs clearance, and delivery to global destinations. As a distributor, we provide reliable supply chain support for industrial tooling needs.

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

Select an OSG STI Tap based on the thread size and tolerance required for your helical coil insert. For a 1/4"-28 UNF insert, use this tap with H2 / 2B-3B tolerance. Ensure the tap matches the insert's pitch and class. Plug chamfer is suitable for through or blind holes.

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 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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