OSG Screw Thread Insert STI Tap: Spiral Fute, 7/8"-9 UNC, H3 / 2B-3B
OSG Spiral-Flute STI Taps for Steel & Stainless Steel.
SKU 3G-OTH-244178
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
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Product Description
OSG Spiral-Flute STI Taps for Steel & Stainless Steel.
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 component.
What are the specifications of the OSG STI Tap 7/8"-9 UNC?
This OSG spiral-flute STI tap has a thread size of 7/8"-9 UNC, 4 flutes, and a ground thread tolerance of H3 / 2B-3B. It is designed for tapping holes that will accept screw thread inserts in steel and stainless steel. The manufacturer part number is 30205208.
Where to buy OSG STI Taps worldwide?
3G Electric supplies OSG STI Taps worldwide. As a global industrial sourcing partner, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on the OSG 7/8"-9 UNC spiral-flute STI tap (MPN 30205208).
How to select the correct STI tap size for a thread repair?
Select an STI tap that matches the original thread size and pitch, such as 7/8"-9 UNC. The tap tolerance (H3 / 2B-3B) must align with the insert manufacturer's recommendation. Always verify the material being tapped — OSG spiral-flute taps are optimized for steel and stainless steel.
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.
