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OSG Screw Thread Insert STI Tap: Spiral Fute, 3/8"-24 UNF, H3 / 2B-3B - Spiral-Flute STI Taps for Aluminum
OSGSpiral-Flute STI Taps for Aluminum

OSG Screw Thread Insert STI Tap: Spiral Fute, 3/8"-24 UNF, H3 / 2B-3B

SKU 3G-OTH-262353

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Fute, 3/8"-24 UNF, H3 / 2B-3B
Category
Spiral-Flute STI Taps for Aluminum
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Technical Specifications

OSG
Manufacturer Part Number
1303901100
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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 aluminum and non-ferrous materials to accept helical wire thread inserts. It is commonly used in aerospace, automotive, and general manufacturing where strong, wear-resistant threads are required in softer base materials.

What are the specifications of the OSG STI Tap 3/8"-24 UNF?

This OSG STI Tap has a 3/8"-24 UNF thread size, H3 / 2B-3B tolerance, and a spiral-flute design with 2 flutes. It is designed for threading holes that will receive screw thread inserts in aluminum and similar materials. The manufacturer part number is 1303901100.

Where to buy OSG STI Taps for aluminum worldwide?

3G Electric supplies OSG STI Taps like the 3/8"-24 UNF spiral-flute model to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this and other OSG threading tools.

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

Select an STI tap that matches the thread size and pitch of the insert you plan to install. For example, a 3/8"-24 UNF STI tap is used with a corresponding 3/8"-24 UNF thread insert. Always verify the tap tolerance (e.g., H3) matches your required thread class (2B or 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 aluminum. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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