OSG Screw Thread Insert STI Tap: Spiral Point, 1/4"-20 UNC, H3 / 2B-3B, 3 Flute
The OSG Screw Thread Insert STI Tap: Spiral Point (SKU 3G-OTH-250398, MPN 1103600600) is a spiral-point STI tap for aluminum, sized 1/4"-20 UNC with an H3 / 2B-3B tolerance and plug chamfer. It features 3 flutes and…
SKU 3G-OTH-250398
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 (SKU 3G-OTH-250398, MPN 1103600600) is a spiral-point STI tap for aluminum, sized 1/4"-20 UNC with an H3 / 2B-3B tolerance and plug chamfer. It features 3 flutes and is designed for threading holes to accept screw thread inserts.
Frequently Asked Questions
What is the OSG Screw Thread Insert STI Tap used for?
This OSG spiral-point STI tap is designed for cutting internal threads in aluminum and other non-ferrous materials before installing screw thread inserts. It is commonly used in aerospace, automotive, and general manufacturing applications where reliable thread reinforcement is required.
What are the specifications of the OSG 1103600600 STI tap?
The OSG 1103600600 is a spiral-point STI tap with a 1/4"-20 UNC thread size, H3 / 2B-3B tolerance, 3 flutes, and a plug chamfer. It is designed for threading holes that will accept screw thread inserts in aluminum and similar materials.
Where to buy OSG STI taps in worldwide?
3G Electric supplies OSG STI taps like the 1103600600 to customers worldwide. We handle full logistics, customs clearance, and delivery to your location. Contact us for pricing and lead time on this spiral-point tap for aluminum threading.
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, such as 1/4"-20 UNC. The tap tolerance (e.g., H3 / 2B-3B) must align with the insert manufacturer's recommendation. OSG taps are engineered for precise thread fit in aluminum and non-ferrous materials.
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.
