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OSG Screw Thread Insert STI Tap: Spiral Fute, 7/16"-14 UNC, H4 / 2B-3B, 3 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, 7/16"-14 UNC, H4 / 2B-3B, 3 Flute

SKU 3G-OTH-244299

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Fute, 7/16"-14 UNC, H4 / 2B-3B, 3 Flute
Category
Spiral-Flute STI Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
0147301
Type
H4 / 2B-3B, Bottoming Chamfer
Flute
3
UNC
7/16"-14
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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 for installing helical wire thread inserts. It is used in industrial maintenance and production to repair or reinforce threaded holes, ensuring strong, wear-resistant connections in demanding applications.

What are the specifications of the OSG 0147301 STI Tap?

The OSG 0147301 STI Tap has a 7/16"-14 UNC thread, H4 / 2B-3B tolerance, 3 flutes, and a bottoming chamfer. It is a spiral-flute tap designed for steel and stainless steel, providing efficient chip evacuation and precise thread forming for insert installation.

Where to buy OSG STI Taps worldwide?

3G Electric supplies OSG STI Taps like the 0147301 to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this spiral-flute tap for steel and stainless steel applications.

How to select the correct STI Tap for thread inserts?

Select an STI Tap matching the insert's thread size and pitch, such as 7/16"-14 UNC. Choose a bottoming chamfer for blind holes or a plug chamfer for through holes. Ensure the tap tolerance (e.g., H4 / 2B-3B) aligns with the required class of fit for the insert.

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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