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OSG Screw Thread Insert STI Tap: Spiral Fute, 1/2"-20 UNF, H3 / 2B-3B - Spiral-Flute STI Taps for Multiple Materials
OSGSpiral-Flute STI Taps for Multiple Materials

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

SKU 3G-OTH-281167

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

OSG
Manufacturer Part Number
31502208
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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?

The OSG Screw Thread Insert STI Tap is used to cut internal threads in multiple materials for installing screw thread inserts. It is commonly applied in aerospace, automotive, and general manufacturing where strong, wear-resistant threads are needed in softer base materials.

What are the specifications of the OSG Screw Thread Insert STI Tap?

This OSG tap has a 1/2"-20 UNF thread size, H3 / 2B-3B tolerance, and a spiral-flute design with 3 flutes. It is designed for multiple materials and carries manufacturer part number 31502208. The spiral flute helps evacuate chips during threading.

Where to buy the OSG Screw Thread Insert STI Tap worldwide?

You can source the OSG Screw Thread Insert STI Tap through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time.

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

Select an OSG STI tap based on the thread insert's size and tolerance. For a 1/2"-20 UNF insert, use this tap with H3 / 2B-3B tolerance. Ensure the tap matches the insert manufacturer's recommended drill size and that your material is compatible with spiral-flute taps for chip evacuation.

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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