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OSG Screw Thread Insert STI Tap: Spiral Fute, 3/4"-10 UNC, 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"-10 UNC, H3 / 2B-3B, 4 Flute

SKU 3G-OTH-244224

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Fute, 3/4"-10 UNC, H3 / 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
30204508
Type
H3 / 2B-3B, Bottoming Chamfer
Flute
4
UNC
3/4"-10
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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 cuts internal threads in steel and stainless steel to accept helical wire thread inserts. It is commonly used in automotive, aerospace, and heavy equipment manufacturing to repair or reinforce threaded holes in demanding applications.

What are the specifications of the OSG 30204508 STI Tap?

The OSG 30204508 is a spiral-flute STI tap with 3/4"-10 UNC 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 tap is made by OSG, a leading cutting tool manufacturer.

Where to buy OSG STI Taps worldwide?

3G Electric supplies and delivers OSG STI Taps, including the 30204508 model, to customers worldwide. We handle full logistics and customs clearance, ensuring your order reaches any global destination. Contact us for availability and lead time on this and other OSG tooling.

How to select the correct STI tap size for a thread insert?

To select the correct STI tap, match the tap's thread size and pitch to the insert's nominal thread (e.g., 3/4"-10 UNC). Use an STI-specific tap like OSG's spiral-flute design for steel and stainless steel. Ensure the tap tolerance (H3 / 2B-3B) aligns with the required class of fit 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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