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OSG Screw Thread Insert STI Tap: Spiral Fute, 5/8"-18 UNF, H3 / 2B-3B - Spiral-Flute STI Taps for Steel & Stainless Steel
OSGSpiral-Flute STI Taps for Steel & Stainless Steel

OSG Screw Thread Insert STI Tap: Spiral Fute, 5/8"-18 UNF, H3 / 2B-3B

SKU 3G-OTH-244215

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Fute, 5/8"-18 UNF, H3 / 2B-3B
Category
Spiral-Flute STI Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
30204108
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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 steel and stainless steel to accept helical wire thread inserts. It is used in industrial maintenance and production to repair or reinforce stripped threads, ensuring strong, reusable connections in demanding applications.

What are the specifications of the OSG 30204108 STI Tap?

The OSG 30204108 is a spiral-flute STI tap with a 5/8"-18 UNF thread, H3 / 2B-3B tolerance, and 4 flutes. It is designed for threading steel and stainless steel to accept screw thread inserts. The spiral flute design aids chip evacuation in blind-hole applications.

Where to buy OSG STI taps in worldwide?

3G Electric supplies OSG STI taps like the 30204108 to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this and other OSG threading tools.

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

Select an STI tap that matches the original thread size and pitch, such as 5/8"-18 UNF for the OSG 30204108. The tap must be marked for screw thread insert use, with tolerance like H3 / 2B-3B. Always verify the insert manufacturer's recommended drill and tap specifications 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-flute sti taps for steel & stainless steel. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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