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OSG Screw Thread Insert STI Tap: Spiral Fute, 1/4"-20 UNC, 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, 1/4"-20 UNC, H3 / 2B-3B, 3 Flute

The OSG Screw Thread Insert STI Tap is a spiral-flute tap designed for steel and stainless steel, featuring a 1/4"-20 UNC thread size, H3 / 2B-3B tolerance, 3 flutes, and a bottoming chamfer (MPN 0146108).

SKU 3G-OTH-244333

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Fute, 1/4"-20 UNC, H3 / 2B-3B, 3 Flute
Category
Spiral-Flute STI Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
0146108
Type
H3 / 2B-3B, Bottoming Chamfer
Flute
3
UNC
1/4"-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 designed for steel and stainless steel, featuring a 1/4"-20 UNC thread size, H3 / 2B-3B tolerance, 3 flutes, and a bottoming chamfer (MPN 0146108).

Frequently Asked Questions

What is an OSG Screw Thread Insert STI Tap used for?

An OSG Screw Thread Insert STI Tap is used to cut internal threads in steel and stainless steel for installing screw thread inserts. It is commonly applied in aerospace, automotive, and industrial maintenance to repair or reinforce threaded holes without replacing the parent material.

What are the specifications of the OSG STI Tap 0146108?

The OSG STI Tap 0146108 has a thread size of 1/4"-20 UNC, a thread class of H3 / 2B-3B, 3 flutes, and a bottoming chamfer. It is a spiral-flute tap designed for steel and stainless steel, ensuring efficient chip evacuation during threading operations.

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 on this OSG 0146108 tap.

How to select the correct OSG STI Tap for steel?

To select the correct OSG STI Tap for steel, match the thread size (e.g., 1/4"-20 UNC) and class (H3 / 2B-3B) to your insert requirements. Use a spiral-flute tap for deep blind holes in steel or stainless steel. Always verify the chamfer type—bottoming for threads near hole bottoms.

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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