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OSG Screw Thread Insert STI Tap: Spiral Fute, 3/4"-16 UNF, H3 / 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, H3 / 2B-3B, 4 Flute

The OSG Screw Thread Insert STI Tap (MPN 30204901) is a spiral-flute tap for steel and stainless steel, sized 3/4"-16 UNF with an H3 / 2B-3B tolerance and a bottoming chamfer. It features 4 flutes and is designed for…

SKU 3G-OTH-244324

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Fute, 3/4"-16 UNF, H3 / 2B-3B, 4 Flute
Category
Spiral-Flute STI Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
30204901
Type
H3 / 2B-3B, Bottoming Chamfer
Flute
4
UNF
3/4"-16
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Screw Thread Insert STI Tap (MPN 30204901) is a spiral-flute tap for steel and stainless steel, sized 3/4"-16 UNF with an H3 / 2B-3B tolerance and a bottoming chamfer. It features 4 flutes and is designed for threading holes that will accept screw thread inserts.

Frequently Asked Questions

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

The 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 heavy equipment manufacturing where thread repair or reinforcement is needed.

What are the specifications of the OSG 30204901 STI Tap?

The OSG 30204901 is a spiral-flute STI tap with a 3/4"-16 UNF thread, H3 / 2B-3B tolerance, 4 flutes, and a bottoming chamfer. It is designed for threading steel and stainless steel to accept screw thread inserts. The manufacturer part number is 30204901.

Where to buy the OSG 30204901 STI Tap worldwide?

3G Electric supplies the OSG 30204901 STI Tap worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time on this spiral-flute tap for steel and stainless steel.

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

Select an OSG STI tap based on the thread size and pitch of the insert, material being tapped, and chamfer type. For blind holes, use a bottoming chamfer tap like the 30204901. Ensure the tap tolerance (H3 / 2B-3B) matches the required thread class for the insert.

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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