OSG Screw Thread Insert STI Tap: Spiral Fute, #6-40 UNF, H2 / 2B-3B
SKU 3G-OTH-281099
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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 reliable thread repair or reinforcement is needed.
What are the specifications of the OSG STI Tap #6-40 UNF?
This OSG STI Tap has a #6-40 UNF thread size, H2 / 2B-3B tolerance, and a spiral flute design with 3 flutes. The manufacturer part number is 31500301. It is designed for threading holes that will accept screw thread inserts in multiple materials.
Where to buy OSG STI Tap #6-40 UNF worldwide?
You can source the OSG STI Tap #6-40 UNF worldwide through 3G Electric. We handle full logistics, customs clearance, and delivery to global destinations as an industrial equipment distributor. Contact us for availability and lead time.
How to select the correct OSG STI tap for thread inserts?
Select an OSG STI tap based on the thread size and tolerance required for your insert. For a #6-40 UNF insert, use this spiral-flute tap with H2 / 2B-3B tolerance. Ensure the tap matches the insert manufacturer's specifications for proper thread engagement and fit.
Used in
Common applications for OSGOSG 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.















