OSG Screw Thread Insert STI Tap: Straight Fute, 5/16"-24 UNF, H2 / 2B-3B, 4 Flute
SKU 3G-OTH-262110
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Frequently Asked Questions
What is an OSG Screw Thread Insert STI Tap used for?
An OSG STI tap cuts internal threads in a workpiece to accept a screw thread insert (Heli-Coil type). It is used 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 12600500 STI Tap?
This OSG STI tap has a 5/16"-24 UNF thread, H2 / 2B-3B tolerance, 4 flutes, and a plug chamfer. It is designed for general-purpose thread repair and reinforcement. The straight flute geometry provides good chip evacuation in through-hole applications.
Where to buy OSG STI Taps worldwide?
3G Electric supplies OSG STI taps worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for a quote on the OSG 12600500 or other thread repair tooling. We source genuine industrial cutting tools for global customers.
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. For a 5/16"-24 UNF insert, use the OSG 12600500 STI tap. Always verify the tap's H tolerance (e.g., H2) matches the required class of fit (2B or 3B) for the insert application.
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Common applications for OSGOSG Products
3G Electric supplies OSG general purpose sti taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















