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OSG Screw Thread Insert STI Tap: Spiral Fute, 1/2"-20 UNF, H4 / 2B-3B - Spiral-Flute STI Taps for Steel & Stainless Steel
OSGSpiral-Flute STI Taps for Steel & Stainless Steel

OSG Screw Thread Insert STI Tap: Spiral Fute, 1/2"-20 UNF, H4 / 2B-3B

SKU 3G-OTH-244191

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Fute, 1/2"-20 UNF, H4 / 2B-3B
Category
Spiral-Flute STI Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
30202708
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

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. The spiral flute design evacuates chips upward, making it ideal for blind-hole applications. This tap produces threads that accept STI inserts, commonly used in aerospace, automotive, and industrial maintenance.

What are the specifications of the OSG STI tap 30202708?

The OSG STI tap model 30202708 has a thread size of 1/2"-20 UNF, a thread tolerance of H4 / 2B-3B, and a 4-flute spiral-flute design. It is designed for tapping steel and stainless steel. The manufacturer part number is 30202708, and it is classified as a spiral-flute STI tap for screw thread inserts.

Where to buy OSG taps in worldwide?

You can source OSG taps worldwide through 3G Electric, a global industrial equipment distributor established in 1990. We handle full logistics, customs clearance, and delivery to any location. Contact us for availability and lead time on the OSG spiral-flute STI tap model 30202708.

How to select the correct OSG STI tap for steel?

To select the correct OSG STI tap for steel, match the thread size and pitch to your application, such as 1/2"-20 UNF. Choose a spiral-flute design for blind holes to evacuate chips. Ensure the tap tolerance, like H4 / 2B-3B, aligns with your required thread class. Always use appropriate cutting fluid for steel.

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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