OSG Screw Thread Insert STI Tap: Spiral Fute, 1/4"-20 UNC, H2 / 2B-3B
SKU 3G-OTH-244204
Need installation or engineering help?
Ask a question
Frequently Asked Questions
What is an OSG Screw Thread Insert STI Tap used for?
An OSG Screw Thread Insert STI Tap cuts internal threads in steel and stainless steel to accept helical wire thread inserts. It is commonly used in automotive, aerospace, and general manufacturing to repair or reinforce threaded holes in demanding materials.
What are the specifications of the OSG 30201001 STI Tap?
The OSG 30201001 is a spiral-flute STI tap with thread size 1/4"-20 UNC, 3 flutes, and a thread class of H2 / 2B-3B. It is designed for tapping steel and stainless steel to accept screw thread inserts.
Where to buy OSG STI Taps worldwide?
3G Electric supplies OSG STI Taps worldwide, handling full logistics and customs clearance. As a global industrial solutions provider, we source and deliver genuine OSG cutting tools to any destination, ensuring compliance and timely delivery.
How to select the correct STI tap for thread inserts?
Select an STI tap with the same thread size and pitch as the insert, such as 1/4"-20 UNC. Use a spiral-flute design for steel and stainless steel to clear chips. Match the thread class (e.g., H2 / 2B-3B) to the insert's tolerance requirements.
Used in
Common applications for OSGOSG Products
3G Electric supplies OSG spiral-flute sti taps for steel & stainless steel. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















