OSG Screw Thread Insert STI Tap: Spiral Fute, 9/16"-12 UNC, H3 / 2B-3B
SKU 3G-OTH-281124
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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 multiple materials to accept helical wire thread inserts. It is commonly used in aerospace, automotive, and general manufacturing to repair or reinforce tapped holes in aluminum, steel, and cast iron.
What are the specifications of the OSG 31502408 STI Tap?
The OSG 31502408 is a spiral-flute STI tap with thread size 9/16\"-12 UNC, ground thread tolerance H3 / 2B-3B, and 4 flutes. It is designed for tapping holes that will receive screw thread inserts in multiple materials.
Where to buy OSG STI Taps in worldwide?
3G Electric supplies OSG STI Taps worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on the OSG 31502408 spiral-flute STI 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 9/16\"-12 UNC. The tap tolerance (e.g., H3 / 2B-3B) must align with the insert manufacturer's recommendation. Always verify the drill size for the STI tap before threading.
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.















