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

The OSG Screw Thread Insert STI Tap is used to cut internal threads in multiple materials for installing helical wire thread inserts. It is commonly applied in aerospace, automotive, and general manufacturing where thread repair or reinforcement is needed. The spiral-flute design aids chip evacuation in blind-hole applications.

This OSG STI tap has a #4-40 UNC thread size, H2 / 2B-3B tolerance, and 2 flutes with a spiral-flute design. The manufacturer part number is 1715801. It is designed for threading multiple materials to accept screw thread inserts, ensuring proper fit and thread strength.

You can source the OSG Screw Thread Insert STI Tap worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we supply this OSG tap to customers across industries.

Select the OSG STI tap based on the thread insert size and material. For #4-40 UNC inserts, use this tap with H2 / 2B-3B tolerance. Ensure the tap matches the insert manufacturer's specifications. For multiple materials, the spiral-flute design helps chip removal. Always follow standard tapping practices for best results.