OSG Screw Thread Insert STI Tap: Spiral Point, 7/16"-20 UNF, H4 / 2B-3B, 3 Flute
The OSG Screw Thread Insert STI Tap is a spiral-point tap designed for aluminum, with a 7/16"-20 UNF thread size, H4 / 2B-3B tolerance, 3 flutes, and a plug chamfer (MPN 1103601200).
SKU 3G-OTH-250401
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
The OSG Screw Thread Insert STI Tap is a spiral-point tap designed for aluminum, with a 7/16"-20 UNF thread size, H4 / 2B-3B tolerance, 3 flutes, and a plug chamfer (MPN 1103601200).
Frequently Asked Questions
What is an OSG spiral-point STI tap used for?
An OSG spiral-point STI tap is used to cut internal threads in aluminum for screw thread inserts. It is designed for through-hole applications, with a plug chamfer and three flutes that push chips forward, reducing clogging and improving thread quality in softer materials.
What are the specifications of the OSG 7/16"-20 UNF STI tap?
This OSG STI tap has a 7/16"-20 UNF thread size, H4 / 2B-3B tolerance, three flutes, and a spiral-point design with plug chamfer. It is intended for threading holes that will accept screw thread inserts in aluminum. The manufacturer part number is 1103601200.
Where to buy OSG STI taps worldwide?
You can source OSG STI taps worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this OSG spiral-point STI tap.
How to select the correct STI tap for aluminum?
Select an STI tap with a spiral-point design for through holes in aluminum, as it pushes chips forward. Ensure the thread size matches the insert (e.g., 7/16"-20 UNF) and the tolerance class (H4 / 2B-3B) fits your application. OSG taps are a reliable choice for consistent thread quality.
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.
