OSG Screw Thread Insert STI Tap: Spiral Fute, 7/8"-14 UNF, H3 / 2B-3B

The OSG Screw Thread Insert STI Tap is used to cut internal threads in steel and stainless steel for installing screw thread inserts. It is commonly applied in aerospace, automotive, and heavy equipment manufacturing where thread repair or reinforcement is required.

The OSG 30205608 is a spiral-flute STI tap with a 7/8"-14 UNF thread size, H3 / 2B-3B tolerance, and 4 flutes. It is designed for threading steel and stainless steel. The spiral flute design helps evacuate chips upward, making it suitable for through-hole applications.

You can source OSG STI taps 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 on the OSG 30205608 or other OSG threading tools.

Select an STI tap that matches the insert's thread size and pitch, such as 7/8"-14 UNF. Ensure the tap tolerance (e.g., H3 / 2B-3B) aligns with the required class of fit. For steel or stainless steel, choose a spiral-flute design like this OSG tap to manage chip evacuation and prolong tool life.