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OSG Screw Thread Insert STI Tap: Spiral Point, 3/8"-24 UNF, H3 / 2B-3B, 3 Flute - Spiral-Point STI Taps
OSGSpiral-Point STI Taps

OSG Screw Thread Insert STI Tap: Spiral Point, 3/8"-24 UNF, H3 / 2B-3B, 3 Flute

SKU 3G-OTH-287004

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Point, 3/8"-24 UNF, H3 / 2B-3B, 3 Flute
Category
Spiral-Point STI Taps
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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

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
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 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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