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OSG Screw Thread Insert STI Tap: Spiral Fute, #8-36 UNF, H2 / 2B-3B - Spiral-Flute STI Taps for Multiple Materials
OSGSpiral-Flute STI Taps for Multiple Materials

OSG Screw Thread Insert STI Tap: Spiral Fute, #8-36 UNF, H2 / 2B-3B

SKU 3G-OTH-281090

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Fute, #8-36 UNF, H2 / 2B-3B
Category
Spiral-Flute STI Taps for Multiple Materials
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Technical Specifications

OSG
Manufacturer Part Number
31500408
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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 is used to cut internal threads in multiple materials before installing a helical wire thread insert. It is commonly applied in aerospace, automotive, and general manufacturing to repair or reinforce stripped threads in aluminum, steel, and cast iron.

What are the specifications of the OSG STI Tap #8-36 UNF?

The OSG STI Tap has a #8-36 UNF thread size, H2 / 2B-3B tolerance, and a spiral-flute design with 3 flutes. The manufacturer part number is 31500408. It is designed for multiple materials and produces threads that accept standard screw thread inserts.

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 the OSG 31500408 STI Tap.

How to select the correct OSG STI Tap for a thread repair?

To select the correct OSG STI Tap, match the thread size and pitch (e.g., #8-36 UNF) to the insert you plan to install. Use a tap with H2 / 2B-3B tolerance for standard class fit. The spiral-flute design helps evacuate chips when tapping blind holes in multiple materials.

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

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