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OSG Screw Thread Insert STI Tap: Spiral Fute, 1/2"-20 UNF, H4 / 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, 1/2"-20 UNF, H4 / 2B-3B

SKU 3G-OTH-244340

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Fute, 1/2"-20 UNF, H4 / 2B-3B
Category
Spiral-Flute STI Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
30202701
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Frequently Asked Questions

What is an OSG spiral-flute STI tap used for?

An OSG spiral-flute STI tap is used to cut internal threads in steel and stainless steel for screw thread inserts. It is designed for blind-hole threading, with spiral flutes that evacuate chips upward, preventing clogging and ensuring clean threads in demanding industrial applications.

What are the specifications of the OSG STI tap 30202701?

The OSG STI tap model 30202701 has a thread size of 1/2"-20 UNF, a thread limit of H4 / 2B-3B, and 4 flutes. It is a spiral-flute tap designed for steel and stainless steel. The manufacturer part number is 30202701, and it is used for screw thread insert installation.

Where to buy OSG STI taps worldwide?

You can source OSG STI taps worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we supply genuine OSG tooling for international procurement needs.

How to select the correct OSG STI tap for a job?

To select the correct OSG STI tap, match the thread size and pitch (e.g., 1/2"-20 UNF) to the insert requirements. Verify the thread limit class (H4 / 2B-3B) for fit tolerance. Choose spiral-flute taps for blind holes in steel or stainless steel to ensure chip evacuation and thread quality.

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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