OSG Screw Thread Insert STI Tap: Spiral Fute, 9/16"-12 UNC, H4 / 2B-3B
SKU 3G-OTH-244394
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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 for installing helical wire thread inserts. It is commonly used in aerospace, automotive, and heavy equipment repair where stripped threads must be restored to original strength without replacing the parent component.
What are the specifications of the OSG 30203101 STI Tap?
The OSG 30203101 is a spiral-flute STI tap with thread size 9/16"-12 UNC, 4 flutes, and tolerance class H4 / 2B-3B. It is designed for threading holes that will accept screw thread inserts in steel and stainless steel. The spiral flute design helps evacuate chips upward during tapping.
Where to buy OSG STI Taps in worldwide?
3G Electric supplies OSG STI Taps like the 30203101 to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for a quote on this or any other OSG threading tool — we source genuine industrial equipment across 14 departments.
How to select the correct STI tap size for a thread insert?
Select an STI tap that matches the thread insert's nominal size and pitch — for example, a 9/16"-12 UNC insert requires a 9/16"-12 UNC STI tap. The tap tolerance (H4 / 2B-3B) must align with the insert manufacturer's recommended class. Always verify the drill diameter for the STI tap before machining.
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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.
