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OSG Screw Thread Insert STI Tap: Spiral Fute, 5/16"-18 UNC, H3 / 2B-3B - Spiral-Flute STI Taps for Aluminum
OSGSpiral-Flute STI Taps for Aluminum

OSG Screw Thread Insert STI Tap: Spiral Fute, 5/16"-18 UNC, H3 / 2B-3B

SKU 3G-OTH-262350

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Fute, 5/16"-18 UNC, H3 / 2B-3B
Category
Spiral-Flute STI Taps for Aluminum
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Technical Specifications

OSG
Manufacturer Part Number
1303900808
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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 aluminum for screw thread inserts. It creates threads that accept helical coil inserts, providing stronger threads in soft materials. This tap is designed for through-hole applications in aluminum and non-ferrous metals.

What are the specifications of the OSG STI tap 1303900808?

The OSG STI tap 1303900808 has a 5/16"-18 UNC thread size, H3 / 2B-3B tolerance, and 2 flutes. It is a spiral-flute design for aluminum. The manufacturer part number is 1303900808. 3G Electric supplies this OSG tap for industrial threading applications.

Where to buy OSG STI taps in worldwide?

3G Electric supplies OSG STI taps worldwide. We handle full logistics, customs clearance, and delivery to your facility. As a global industrial solutions provider, we source genuine OSG taps like the 1303900808 and support procurement teams with technical guidance and reliable delivery.

How to select the correct STI tap for aluminum?

Select an STI tap with the same thread size and pitch as the insert you will install. For aluminum, use a spiral-flute design like this OSG tap to clear chips efficiently. Ensure the tap tolerance (H3 / 2B-3B) matches your required thread class. 3G Electric can help confirm compatibility.

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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