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OSG Screw Thread Insert STI Tap: Spiral Fute, #4-48 UNF, H2 / 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, #4-48 UNF, H2 / 2B-3B, 3 Flute

The OSG Screw Thread Insert STI Tap is a spiral-flute tap for steel and stainless steel, specified as #4-48 UNF with H2 / 2B-3B tolerance and a bottoming chamfer. It features 3 flutes and is identified by…

SKU 3G-OTH-244396

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Fute, #4-48 UNF, H2 / 2B-3B, 3 Flute
Category
Spiral-Flute STI Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
30200208
Type
#4-48 UNF, H2 / 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 #4-48 UNF with H2 / 2B-3B tolerance and a bottoming chamfer. It features 3 flutes and is identified by manufacturer part number 30200208.

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 accepting helical wire thread inserts. The #4-48 UNF size with bottoming chamfer allows threading close to the bottom of a blind hole, restoring or reinforcing damaged threads.

What are the specifications of the OSG STI Tap #4-48 UNF?

This OSG STI Tap has a #4-48 UNF thread size, H2 / 2B-3B tolerance, 3 flutes, and a bottoming chamfer. It is a spiral-flute design for steel and stainless steel. The manufacturer part number is 30200208. It is designed for use with screw thread inserts.

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 the OSG #4-48 UNF STI Tap (MPN 30200208).

How to select the correct OSG STI Tap for a repair job?

Select an OSG STI Tap that matches the thread size and pitch of the insert you plan to install. For steel or stainless steel, choose a spiral-flute design like this #4-48 UNF tap. Ensure the chamfer type (bottoming for blind holes) and tolerance (H2 / 2B-3B) suit your 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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