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OSG Screw Thread Insert STI Tap: Spiral Fute, 3/4"-16 UNF, H4 / 2B-3B, 4 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, 3/4"-16 UNF, H4 / 2B-3B, 4 Flute

SKU 3G-OTH-244212

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Fute, 3/4"-16 UNF, H4 / 2B-3B, 4 Flute
Category
Spiral-Flute STI Taps for Steel & Stainless Steel
Available to Order
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Technical Specifications

OSG
Manufacturer Part Number
0148201
Type
H4 / 2B-3B, Bottoming Chamfer
Flute
4
UNF
3/4"-16
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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 is used to cut internal threads in steel and stainless steel for installing helical wire thread inserts. It restores or strengthens threads in tapped holes, commonly in automotive, aerospace, and industrial maintenance applications.

What are the specifications of the OSG 0148201 STI Tap?

The OSG 0148201 is a spiral-flute STI tap with 3/4"-16 UNF thread, H4 / 2B-3B tolerance, 4 flutes, and a bottoming chamfer. It is designed for threading steel and stainless steel to accept screw thread inserts.

Where to buy OSG STI Taps worldwide?

3G Electric supplies OSG STI Taps like the 0148201 to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this spiral-flute tap for steel and stainless steel.

How to select the correct STI tap size for a repair?

Select an STI tap that matches the thread size and pitch of the insert you plan to install. For the OSG 0148201, use a 3/4"-16 UNF insert. The bottoming chamfer allows threading to the bottom of a blind hole. Always verify the H4 tolerance matches your required class of fit.

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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