OSG Screw Thread Insert STI Tap: Spiral Point, 9/16"-18 UNF, H3 / 2B-3B, 3 Flute
The OSG Screw Thread Insert STI Tap is a spiral-point tap for steel and stainless steel, specified as 9/16"-18 UNF with an H3 / 2B-3B tolerance, 3 flutes, and a plug chamfer (MPN 30102801). 3G Electric sources this…
SKU 3G-OTH-265485
Local availability & support — Singapore
- Local office
- 20 Woodlands Link #09-05, Singapore 738733
- Phone
- +65 8878 8355
- Delivery
- Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
- Payment
- Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
- Ships to
- Singapore
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Product Description
The OSG Screw Thread Insert STI Tap is a spiral-point tap for steel and stainless steel, specified as 9/16"-18 UNF with an H3 / 2B-3B tolerance, 3 flutes, and a plug chamfer (MPN 30102801). 3G Electric sources this genuine OSG tool across 14 industrial departments, with specialist expertise in combustion, pumps, and controls ensuring accurate specification and supply.
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 used in manufacturing and repair applications where stripped or damaged threads need reinforcement, ensuring strong, reusable connections in demanding industrial environments.
What are the specifications of the OSG STI Tap 30102801?
The OSG STI Tap 30102801 is a spiral-point, plug-chamfer tap with 3 flutes. It cuts a 9/16"-18 UNF thread and is ground to H3 / 2B-3B tolerance. This tap is designed specifically for installing screw thread inserts in steel and stainless steel workpieces.
Where to buy OSG STI Taps worldwide?
3G Electric supplies OSG STI Taps like the 30102801 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 cutting tool; we source genuine industrial equipment across 14 departments.
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 9/16"-18 UNF. The tap must be marked for screw thread inserts (STI) and have the correct tolerance class (e.g., H3 / 2B-3B) to ensure the insert fits properly. Always follow the insert manufacturer's drill and tap recommendations.
Used in
Common applications for OSGOSG Products
3G Electric supplies OSG spiral-point 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.
