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

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

SKU 3G-OTH-273398

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

OSG
Manufacturer Part Number
8013000
Type
H3 / 2B-3B, Bottoming Chamfer
Flute
3
UNC
5/16"-18
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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 metal to accept helical wire thread inserts. It is used in aerospace, automotive, and general manufacturing to repair or reinforce tapped holes in aluminum, cast iron, and steel components.

What are the specifications of the OSG 8013000 STI Tap?

The OSG 8013000 is a spiral-flute STI tap with 5/16"-18 UNC thread, H3 / 2B-3B tolerance, 3 flutes, and a bottoming chamfer. It is designed for thread insert installation and is made from high-speed steel for durability in production tapping.

Where to buy OSG STI Taps worldwide?

3G Electric supplies OSG STI Taps like the 8013000 to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this spiral-flute bottoming tap.

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

Select an STI tap that matches the thread insert's nominal size and pitch, such as 5/16"-18 UNC. The tap must have STI (screw thread insert) designation and the correct tolerance class (e.g., H3 / 2B-3B) to ensure the insert fits properly after tapping.

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

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