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OSG Screw Thread Insert STI Tap: Spiral Fute, 1/4"-20 UNC, H3 / 2B-3B - Spiral-Flute STI Taps for Aluminum
OSGSpiral-Flute STI Taps for Aluminum

OSG Screw Thread Insert STI Tap: Spiral Fute, 1/4"-20 UNC, H3 / 2B-3B

SKU 3G-OTH-262366

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Fute, 1/4"-20 UNC, H3 / 2B-3B
Category
Spiral-Flute STI Taps for Aluminum
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Technical Specifications

OSG
Manufacturer Part Number
1303900608
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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?

This OSG spiral-flute STI tap is designed for cutting internal threads in aluminum and non-ferrous materials to accept screw 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 1303900608?

The OSG STI tap has a thread size of 1/4"-20 UNC, with a thread tolerance of H3 / 2B-3B. It features a spiral flute design with 2 flutes, optimized for chip evacuation in aluminum. The manufacturer part number is 1303900608, and it is classified as a spiral-flute STI tap for thread insert installation.

Where to buy OSG STI Taps in worldwide?

3G Electric supplies OSG STI taps worldwide, including the 1/4"-20 UNC model 1303900608. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we source and deliver OSG tooling to any country.

How to select the correct OSG STI tap for aluminum?

Select an STI tap with the same thread size and pitch as the insert you will install. For aluminum, choose a spiral-flute design like this OSG tap for efficient chip removal. Verify the thread tolerance (H3 / 2B-3B) matches your required fit class. Always use appropriate cutting fluid for aluminum to extend tool life.

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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