OSG #4-40 UNC Spiral-Point STI Tap for Aluminum
The OSG Screw Thread Insert STI Tap: Spiral Point (MPN 1103600208) is a #4-40 UNC, H2 / 2B-3B, Plug Chamfer tap with 2 flutes, designed for threading aluminum.
SKU 3G-OTH-250423
Local availability & support — Singapore
- Local office
- 20 Woodlands Link #09-05, Singapore 738733
- Phone
- +65 8878 8355
- Payment
- Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Need installation or engineering help?
Ask a question
Product Description
The OSG Screw Thread Insert STI Tap: Spiral Point (MPN 1103600208) is a #4-40 UNC, H2 / 2B-3B, Plug Chamfer tap with 2 flutes, designed for threading aluminum.
Frequently Asked Questions
What is an OSG Screw Thread Insert STI Tap used for?
An OSG Screw Thread Insert STI Tap is used to pre-tap holes for helical wire thread inserts in aluminum and other non-ferrous materials. The spiral-point design pushes chips forward, making it ideal for through-hole applications where clean threads are required for insert installation.
What are the specifications of the OSG STI Tap #4-40 UNC?
This OSG STI tap is #4-40 UNC with a H2 / 2B-3B thread class, 2-flute spiral-point design, and plug chamfer. It is designed for tapping holes that will accept screw thread inserts. The manufacturer part number is 1103600208.
Where to buy OSG STI Taps for aluminum worldwide?
3G Electric supplies OSG STI taps for aluminum worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us to source this #4-40 UNC spiral-point tap or other OSG tooling for your production needs.
How to select the correct STI tap size for thread inserts?
Select an STI tap that matches the insert's nominal thread size and pitch, such as #4-40 UNC. The tap must be marked 'STI' and have the correct thread class (e.g., H2 / 2B-3B) to ensure the tapped hole accepts the insert without interference. Always verify the insert manufacturer's recommended tap drill size.
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.
