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OSG Screw Thread Insert STI Tap: Spiral Fute, 5/8"-11 UNC, H4 / 2B-3B, 4 Flute - 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"-11 UNC, H4 / 2B-3B, 4 Flute

SKU 3G-OTH-244347

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Fute, 5/8"-11 UNC, H4 / 2B-3B, 4 Flute
Category
Spiral-Flute STI Taps for Steel & Stainless Steel
Available to Order
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Technical Specifications

OSG
Manufacturer Part Number
30203908
Type
H4 / 2B-3B, Bottoming Chamfer
Flute
4
UNC
5/8"-11
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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?

This OSG spiral-flute STI tap cuts internal threads in steel and stainless steel for installing screw thread inserts. It is used in industrial machining and repair applications where strong, wear-resistant threads are required in ferrous materials.

What are the specifications of the OSG STI Tap 30203908?

This OSG tap has a 5/8"-11 UNC thread, H4 / 2B-3B tolerance, 4 flutes, and a bottoming chamfer. It is designed for spiral-flute tapping in steel and stainless steel. The manufacturer part number is 30203908.

Where to buy OSG STI Tap 30203908 worldwide?

3G Electric supplies and delivers the OSG 30203908 STI tap worldwide. We handle full logistics and customs clearance to ensure the tap reaches your facility, whether you are in North America, Europe, Asia, or the Middle East.

How to select the correct STI tap for thread inserts?

Select an STI tap with the same thread size and pitch as the insert, such as 5/8"-11 UNC. Use a bottoming chamfer for blind holes and a spiral-flute design for steel or stainless steel to clear chips. OSG taps are a reliable choice for precision threading.

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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