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3G Electric
OSG 3/8"-24 UNF Spiral-Point STI Tap, H3 / 2B-3B, 3 Flute, Plug Chamfer - Spiral-Point STI Taps
OSGSpiral-Point STI Taps

OSG 3/8"-24 UNF Spiral-Point STI Tap, H3 / 2B-3B, 3 Flute, Plug Chamfer

The OSG Screw Thread Insert STI Tap: Spiral Point (MPN 7018300) is a 3/8"-24 UNF spiral-point tap with H3 / 2B-3B tolerance, 3 flutes, and a plug chamfer. Designed for threading holes to accept screw thread inserts…

SKU 3G-OTH-287004

Brand
OSG
Item
3/8"-24 UNF Spiral-Point STI Tap, H3 / 2B-3B, 3 Flute, Plug Chamfer
Part Number
7018300
Category
Spiral-Point STI Taps
Available to Order
Also known as:7018300OSG
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Local availability & support — Singapore

Local office
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Phone
+65 8878 8355
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Technical Specifications

OSG
Manufacturer Part Number
7018300
Type
H3 / 2B-3B, Plug Chamfer
Flute
3
UNF
3/8"-24

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

Product Description

The OSG Screw Thread Insert STI Tap: Spiral Point (MPN 7018300) is a 3/8"-24 UNF spiral-point tap with H3 / 2B-3B tolerance, 3 flutes, and a plug chamfer. Designed for threading holes to accept screw thread inserts, this tap is supplied by 3G Electric across 14 industrial departments, with specialist depth in cutting tools and precision threading solutions.

Frequently Asked Questions

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

An OSG Screw Thread Insert STI Tap cuts internal threads in a pre-drilled hole to accept a helical wire thread insert. It is used in industrial maintenance and production applications where stripped or worn threads need repair, or where stronger threads are required in softer materials.

What are the specifications of the OSG 7018300 STI Tap?

The OSG 7018300 is a spiral-point STI tap with 3/8"-24 UNF thread, H3 / 2B-3B tolerance, 3 flutes, and a plug chamfer. It is designed for through-hole tapping and produces threads that accept screw thread inserts. The spiral point pushes chips ahead, reducing clogging.

Where to buy OSG STI Taps worldwide?

3G Electric supplies OSG STI Taps like the 7018300 to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this and other OSG cutting tools across our 14 industrial departments.

How to select the correct STI tap size for a thread insert?

Select an STI tap that matches the thread insert's nominal size and pitch, such as 3/8"-24 UNF. The tap's H3 / 2B-3B tolerance ensures the insert fits correctly. Always verify the insert manufacturer's recommended drill size and tap specification before ordering.

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-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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This spiral-point STI tap is designed for cutting internal threads in through holes prior to installing helical coil thread inserts. It features a 1"-8 UNC thread, H6 tolerance, plug chamfer, 4 flutes, and is made from high-speed steel. Typical applications include thread repair and reinforcement in metal components
OSG
This spiral-point STI tap is designed for cutting internal threads in through holes prior to installing helical coil thread inserts. It features a 1"-8 UNC thread, H6 tolerance, plug chamfer, 4 flutes, and is made from high-speed steel. Typical applications include thread repair and reinforcement in metal components

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