OSG M3x0.5 Metric Spiral-Point STI Tap, D2 / 4H-6H, Plug Chamfer, 2 Flute

An OSG Screw Thread Insert STI Tap cuts internal threads in pre-drilled holes to accept helical wire thread inserts. It is used in metalworking and maintenance applications across industries like automotive, aerospace, and general manufacturing to repair or reinforce threads in softer materials.

The OSG STI Tap 12700300 is a spiral-point, plug-chamfer tap with M3x0.5 metric thread, D2 / 4H-6H tolerance, and 2 flutes. It is designed for through-hole threading and produces chips that push ahead, reducing clogging. The D2 / 4H-6H grade ensures precise fit for insert installation.

3G Electric supplies the OSG STI Tap 12700300 to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. As a global industrial sourcing partner, we provide genuine OSG taps and support for procurement, ensuring you receive the correct tool for your threading application.

Select an STI tap with the same thread size and pitch as the insert, such as M3x0.5. Ensure the tap tolerance matches the insert class, typically 4H-6H for standard inserts. Use a plug chamfer for through holes and a spiral-point design to push chips forward. Verify the tap is marked for STI use.