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OSG Screw Thread Insert STI Tap: Spiral Fute, #2-56 UNC, H2 / 2B-3B - Spiral-Flute STI Taps for Aluminum
OSGSpiral-Flute STI Taps for Aluminum

OSG Screw Thread Insert STI Tap: Spiral Fute, #2-56 UNC, H2 / 2B-3B

SKU 3G-OTH-262355

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Fute, #2-56 UNC, H2 / 2B-3B
Category
Spiral-Flute STI Taps for Aluminum
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Technical Specifications

OSG
Manufacturer Part Number
1303900100
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

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 aluminum for installing helical screw-thread inserts. It is commonly applied in aerospace, automotive, and general manufacturing where strong, wear-resistant threads are needed in soft materials.

What are the specifications of the OSG STI Tap #2-56 UNC?

This OSG STI Tap has a #2-56 UNC thread size, H2 / 2B-3B tolerance, and a spiral-flute design with 2 flutes. It is designed specifically for aluminum and produces threads that accept standard screw-thread inserts. The manufacturer part number is 1303900100.

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 this and other OSG tooling.

How to select the correct STI tap for aluminum?

Select an STI tap with the same thread size and pitch as the insert you plan to install. For aluminum, choose a spiral-flute design like this OSG tap to clear chips effectively. Ensure the tap tolerance (e.g., H2 / 2B-3B) matches your required thread class for proper insert fit.

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 aluminum. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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