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OSG Screw Thread Insert STI Tap: Spiral Fute, 7/16"-20 UNF, H3 / 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"-20 UNF, H3 / 2B-3B, 3 Flute

The OSG Screw Thread Insert STI Tap is a spiral-flute tap for steel and stainless steel, model 0147401. It features a 7/16"-20 UNF thread, H3 / 2B-3B tolerance, 3 flutes, and a bottoming chamfer. 3G Electric…

SKU 3G-OTH-244398

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Fute, 7/16"-20 UNF, H3 / 2B-3B, 3 Flute
Category
Spiral-Flute STI Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
0147401
Type
H3 / 2B-3B, Bottoming Chamfer
Flute
3
UNF
7/16"-20
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Screw Thread Insert STI Tap is a spiral-flute tap for steel and stainless steel, model 0147401. It features a 7/16"-20 UNF thread, H3 / 2B-3B tolerance, 3 flutes, and a bottoming chamfer. 3G Electric interprets this demand and sources the genuine OSG tool, supporting your threading operations across 14 industrial departments.

Frequently Asked Questions

What is the OSG 0147401 STI tap used for?

The OSG 0147401 is a spiral-flute STI tap designed for threading holes in steel and stainless steel before installing screw thread inserts. Its bottoming chamfer allows threading close to the bottom of blind holes, making it ideal for repair and production work.

What are the specifications of the OSG 0147401 STI tap?

This OSG tap has a 7/16"-20 UNF thread size, H3 / 2B-3B tolerance, 3 flutes, and a bottoming chamfer. It is a spiral-flute STI tap for steel and stainless steel, with manufacturer part number 0147401.

Where to buy the OSG 0147401 STI tap worldwide?

3G Electric supplies the OSG 0147401 STI tap worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to select the correct STI tap for a thread insert?

Select an STI tap that matches the thread insert's size and pitch, such as 7/16"-20 UNF. Use a bottoming chamfer for blind holes and a spiral-flute design for steel or stainless steel. OSG taps like the 0147401 are engineered for this application.

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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