OSG Screw Thread Insert STI Tap: Spiral Fute, M5x0.8 Metric, D3 / 4H-6H
SKU 3G-OTH-281118
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 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 STI Tap M5x0.8?
This OSG STI Tap has a metric M5x0.8 thread size, a D3 / 4H-6H tolerance class, and a 3-flute spiral-flute design. The manufacturer part number is 34500508. It is designed for threading holes that will receive screw thread inserts.
Where to buy OSG STI Tap M5x0.8 worldwide?
3G Electric supplies and delivers the OSG STI Tap M5x0.8 (MPN 34500508) to worldwide locations. We handle full logistics and customs clearance, ensuring your order arrives at your facility. Contact us for availability and lead time.
How to select the correct STI tap size for thread inserts?
To select the correct STI tap, match the tap's thread size and pitch to the insert's specifications. For an M5x0.8 insert, use an M5x0.8 STI tap like this OSG model. Always verify the insert manufacturer's recommended tap drill size and tolerance class (e.g., D3 / 4H-6H).
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.















