OSG Screw Thread Insert STI Tap: Spiral Fute, M5x0.8 Metric, D3 / 4H-6H

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 threaded holes in aluminum, steel, and cast iron.

The OSG STI Tap 34500501 is a spiral-flute tap with M5x0.8 metric thread, D3 / 4H-6H tolerance, and 3 flutes. It is designed for threading holes that will receive screw thread inserts, providing chip evacuation in blind-hole applications.

3G Electric supplies OSG STI Taps worldwide, handling full logistics and customs clearance. As a global industrial sourcing partner, we provide genuine OSG taps like the 34500501 to customers across 14 departments, including machining and tooling.

Select an OSG STI Tap based on the thread insert's nominal size and pitch, such as M5x0.8. The tap's tolerance class (e.g., D3 / 4H-6H) must match the insert manufacturer's recommendation. Always verify the material and hole type (through or blind) to choose spiral flute or spiral point geometry.