OSG Screw Thread Insert STI Tap: Spiral Point, 9/16"-12 UNC, H3 / 2B-3B, 3 Flute

An OSG Screw Thread Insert STI Tap cuts internal threads in steel and stainless steel to accept helical wire thread inserts. It is used in industrial maintenance and production applications where stripped or damaged threads need repair or where stronger threads are required in softer base materials.

The OSG STI Tap 30102601 is a spiral-point tap with a 9/16"-12 UNC thread, H3 / 2B-3B tolerance, 3 flutes, and a plug chamfer. It is designed for tapping steel and stainless steel to accept screw thread inserts. The H3 / 2B-3B designation ensures precise thread fit for insert installation.

3G Electric supplies the OSG STI Tap 30102601 to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. As a global industrial solutions provider, we source genuine OSG taps and support procurement teams with accurate quoting and technical guidance.

Select an STI tap that matches the thread size and pitch of the insert, such as 9/16"-12 UNC. Use a tap with H3 / 2B-3B tolerance for standard fits in steel. Choose spiral-point geometry for through-hole applications and plug chamfer for general-purpose threading. Always verify the tap is marked for screw thread insert use.