OSG Screw Thread Insert STI Tap: Spiral Fute, #4-40 UNC, H2 / 2B-3B, 3 Flute
The OSG Screw Thread Insert STI Tap is a spiral-flute tap for steel and stainless steel, specified as #4-40 UNC with an H2 / 2B-3B tolerance and a bottoming chamfer. It features 3 flutes and is identified by…
SKU 3G-OTH-244289
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 is a spiral-flute tap for steel and stainless steel, specified as #4-40 UNC with an H2 / 2B-3B tolerance and a bottoming chamfer. It features 3 flutes and is identified by manufacturer part number 0144801.
Frequently Asked Questions
What is the OSG Screw Thread Insert STI Tap used for?
The OSG Screw Thread Insert STI Tap is used to cut internal threads in steel and stainless steel for installing screw thread inserts. It is commonly applied in aerospace, automotive, and industrial maintenance where strong, wear-resistant threads are required.
What are the specifications of the OSG STI Tap #4-40 UNC?
This OSG STI Tap has a #4-40 UNC thread size, H2 / 2B-3B tolerance, 3 flutes, and a bottoming chamfer. It is a spiral-flute design for steel and stainless steel. The manufacturer part number is 0144801.
Where to buy OSG STI Taps worldwide?
You can source OSG STI Taps through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time.
How to select the correct OSG STI Tap for a thread insert?
Select an OSG STI Tap based on the insert's thread size and material. For steel or stainless steel, use a spiral-flute tap with bottoming chamfer. Verify the tap tolerance (e.g., H2 / 2B-3B) matches the required thread class. Always follow the insert manufacturer's recommendations.
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.
