OSG Screw Thread Insert STI Tap: Spiral Fute, 7/16"-20 UNF, H4 / 2B-3B
SKU 3G-OTH-281132
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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 31501901 STI Tap?
The OSG 31501901 is a spiral-flute STI tap with a 7/16"-20 UNF thread, H4 / 2B-3B tolerance, and 3 flutes. It is designed for threading holes that will receive screw thread inserts, providing accurate thread fit in multiple materials.
Where to buy OSG STI Taps worldwide?
3G Electric supplies OSG STI Taps like the 31501901 to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this OSG 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 7/16"-20 UNF. The tap tolerance (e.g., H4) must align with the insert manufacturer's recommendation. Always verify the insert's drill size and tap drill chart before cutting.
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.
