OSG Screw Thread Insert STI Tap: Spiral Point, 7/16"-20 UNF, H4 / 2B-3B, 3 Flute
SKU 3G-OTH-250408
Need installation or engineering help?
Ask a question
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 aluminum to accept helical wire thread inserts. It is used in aerospace, automotive, and general manufacturing to restore or reinforce tapped holes, ensuring strong, wear-resistant threads in soft materials.
What are the specifications of the OSG 7/16"-20 UNF STI Tap?
This OSG spiral-point STI tap has a 7/16"-20 UNF thread, H4 / 2B-3B tolerance, 3 flutes, and a plug chamfer. It is designed for threading aluminum before inserting screw thread inserts. The manufacturer part number is 1103601208.
Where to buy OSG STI taps for aluminum worldwide?
3G Electric supplies OSG STI taps for aluminum, including the 7/16"-20 UNF model, to customers worldwide. We handle full logistics, customs clearance, and delivery, ensuring you receive the correct tool for your thread repair or production application.
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 / 2B-3B) must align with the insert manufacturer's recommendation. Always verify the tap's chamfer type—plug chamfer suits most general applications.
Used in
Common applications for OSGOSG Products
3G Electric supplies OSG spiral-point sti taps for aluminum. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
