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OSG Screw Thread Insert STI Tap: Spiral Fute, #8-32 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, #8-32 UNC, H4 / 2B-3B, 3 Flute

The OSG Screw Thread Insert STI Tap is a spiral-flute tap for steel and stainless steel, specified as #8-32 UNC with an H4 / 2B-3B tolerance and a bottoming chamfer. It features 3 flutes (MPN 0145401). 3G Electric…

SKU 3G-OTH-244362

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Fute, #8-32 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
0145401
Type
#8-32 UNC, H4 / 2B-3B, Bottoming Chamfer
Flute
3
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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, specified as #8-32 UNC with an H4 / 2B-3B tolerance and a bottoming chamfer. It features 3 flutes (MPN 0145401). 3G Electric interprets demand and sources this genuine industrial tap across 14 departments, with specialist depth in combustion, pumps and controls as an authorised distributor.

Frequently Asked Questions

What is the OSG Screw Thread Insert STI Tap #8-32 UNC used for?

This OSG spiral-flute STI tap is used to cut internal threads in steel and stainless steel for screw thread inserts. It creates threads that accept a helical coil insert, restoring or reinforcing damaged threads in industrial equipment, automotive, and aerospace applications.

What are the specifications of the OSG STI Tap 0145401?

The OSG STI tap has a #8-32 UNC thread size, H4 / 2B-3B tolerance, 3 flutes, and a bottoming chamfer. It is designed for steel and stainless steel. The manufacturer part number is 0145401. It is a spiral-flute tap for thread insert installation.

Where to buy the OSG Screw Thread Insert STI Tap worldwide?

You can source the OSG STI Tap 0145401 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time.

How to select the correct OSG STI tap for thread inserts?

Select an STI tap based on the thread size and pitch of the insert, such as #8-32 UNC. Ensure the tap has the correct tolerance (e.g., H4 / 2B-3B) and chamfer type (bottoming for blind holes). OSG taps are designed for steel and stainless steel applications.

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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