OSG Screw Thread Insert STI Tap: Spiral Point, 5/16"-18 UNC, H3 / 2B-3B, 3 Flute
The OSG Screw Thread Insert STI Tap: Spiral Point (MPN 1103600800) is a spiral-point STI tap for aluminum, sized 5/16"-18 UNC with an H3 / 2B-3B tolerance and plug chamfer. It features 3 flutes and is designed for…
SKU 3G-OTH-250403
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
Need installation or engineering help?
Ask a question
Product Description
The OSG Screw Thread Insert STI Tap: Spiral Point (MPN 1103600800) is a spiral-point STI tap for aluminum, sized 5/16"-18 UNC with an H3 / 2B-3B tolerance and plug chamfer. It features 3 flutes and is designed for thread-insert installation in aluminum workpieces.
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 aluminum to accept helical wire thread inserts. It is used in aerospace, automotive, and general manufacturing to repair or reinforce tapped holes, ensuring strong, wear-resistant threads.
What are the specifications of the OSG STI Tap 5/16"-18 UNC?
This OSG spiral-point STI tap has a 5/16"-18 UNC thread, H3 / 2B-3B tolerance, 3 flutes, and a plug chamfer. It is designed for aluminum and produces threads that accept screw thread inserts. The manufacturer part number is 1103600800.
Where to buy OSG STI Taps for aluminum worldwide?
3G Electric supplies OSG STI taps for aluminum worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time on this 5/16"-18 UNC spiral-point tap (MPN 1103600800).
How to select the correct STI tap for thread inserts?
Select an STI tap that matches the insert's thread size and pitch, such as 5/16"-18 UNC. Use a plug chamfer for through holes and a bottoming chamfer for blind holes. For aluminum, choose a spiral-point design to push chips ahead and reduce clogging.
Used in
Common applications for OSGOSG Products
3G Electric supplies OSG spiral-point sti taps for aluminum. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
