OSG Screw Thread Insert STI Tap: Spiral Fute, #4-40 UNC, H2 / 2B-3B

This OSG spiral-flute STI tap is designed for threading holes in nickel and titanium alloys before installing screw thread inserts. It is commonly used in aerospace, automotive, and high-temperature industrial applications where strong, reliable threads are required in difficult-to-machine materials.

The OSG STI tap has a #4-40 UNC thread size, H2 / 2B-3B tolerance, and 3 flutes. It is a spiral-flute design optimized for nickel and titanium. The manufacturer part number is 31540208. This tap is suitable for creating threads that accept standard screw thread inserts.

3G Electric supplies the OSG Screw Thread Insert STI Tap worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time. We source and deliver this OSG tap to any country.

Select an OSG STI tap with spiral flutes for nickel and titanium alloys, as this design aids chip evacuation. Ensure the tap size matches your required thread insert (e.g., #4-40 UNC). Verify the H2 / 2B-3B tolerance class for proper fit. Always use appropriate cutting fluid for these materials.