OSG Screw Thread Insert STI Tap: Spiral Fute, #3-48 UNC, H2 / 2B-3B, 2 Flute
The OSG Screw Thread Insert STI Tap is a spiral-flute tap for steel and stainless steel, specified as #3-48 UNC with a H2 / 2B-3B tolerance and bottoming chamfer. It features 2 flutes and is identified by…
SKU 3G-OTH-244401
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-flute tap for steel and stainless steel, specified as #3-48 UNC with a H2 / 2B-3B tolerance and bottoming chamfer. It features 2 flutes and is identified by manufacturer part number 30200108.
Frequently Asked Questions
What is an OSG spiral-flute STI tap used for?
An OSG spiral-flute STI tap is used to cut internal threads in steel and stainless steel for screw thread inserts. It creates threads that accept helical coil inserts, commonly used in aerospace, automotive, and industrial maintenance to repair or strengthen tapped holes.
What are the specifications of the OSG STI tap #3-48 UNC?
The OSG STI tap has a #3-48 UNC thread size, H2 / 2B-3B tolerance, 2-flute design, and bottoming chamfer. It is a spiral-flute tap for steel and stainless steel, with manufacturer part number 30200108. OSG is the OEM brand for this precision threading tool.
Where to buy OSG STI taps in 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 the OSG #3-48 UNC spiral-flute tap.
How to select the correct STI tap for a thread repair?
Select an STI tap that matches the insert's thread size and pitch, such as #3-48 UNC. Use a spiral-flute design for steel or stainless steel to evacuate chips. Choose a bottoming chamfer for blind holes. Always verify the tap tolerance (e.g., H2 / 2B-3B) matches the required thread class.
Used in
Common applications for OSGOSG Products
3G Electric supplies OSG spiral-flute 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.
