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OSG Screw Thread Insert STI Tap: Spiral Fute, 3/4"-10 UNC, H5 / 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"-10 UNC, H5 / 2B-3B, 4 Flute

The OSG Screw Thread Insert STI Tap (Spiral Flute) is a 3/4"-10 UNC bottoming-chamfer tap with H5 / 2B-3B tolerance and 4 flutes, designed for threading steel and stainless steel. 3G Electric interprets this demand…

SKU 3G-OTH-244359

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Fute, 3/4"-10 UNC, H5 / 2B-3B, 4 Flute
Category
Spiral-Flute STI Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
30204708
Type
H5 / 2B-3B, Bottoming Chamfer
Flute
4
UNC
3/4"-10
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Screw Thread Insert STI Tap (Spiral Flute) is a 3/4"-10 UNC bottoming-chamfer tap with H5 / 2B-3B tolerance and 4 flutes, designed for threading steel and stainless steel. 3G Electric interprets this demand and sources the genuine OSG part (MPN 30204708) across 14 industrial departments — with specialist depth in cutting tools and fastening solutions — then quotes and supports your order with accountable expertise.

Frequently Asked Questions

What is an OSG spiral-flute STI tap used for?

An 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 helical coil inserts, commonly applied in aerospace, automotive, and heavy equipment repairs where stripped threads need reinforcement.

What are the specifications of the OSG STI tap 30204708?

The OSG STI tap model 30204708 has a 3/4"-10 UNC thread size, H5 tolerance for 2B-3B class fit, 4 flutes, and a bottoming chamfer. It is a spiral-flute design optimized for steel and stainless steel. The manufacturer part number is 30204708.

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 30204708 tap.

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

To select the correct OSG STI tap, match the thread size and pitch to the insert you plan to use. For steel or stainless steel, choose a spiral-flute design like the 30204708 for chip evacuation. Ensure the tap tolerance (e.g., H5) aligns with the required thread class (2B-3B).

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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