OSG Screw Thread Insert STI Tap: Spiral Fute, 3/4"-10 UNC, H3 / 2B-3B
SKU 3G-OTH-281112
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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 31503201 STI Tap?
The OSG 31503201 is a spiral-flute STI tap with a 3/4"-10 UNC thread size, H3 / 2B-3B tolerance, and 4 flutes. It is designed for threading holes that will receive screw thread inserts, providing chip evacuation in blind-hole applications.
Where to buy OSG STI Taps worldwide?
3G Electric supplies OSG STI Taps worldwide, handling full logistics and customs clearance for global delivery. As a sourcing specialist across 14 industrial departments, we provide genuine OSG cutting tools and can quote for any quantity or specification.
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 3/4"-10 UNC. The tap diameter is oversized relative to a standard tap to accommodate the insert wall thickness. Always verify the insert manufacturer's recommended tap drill size and tolerance class.
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.
