OSG Screw Thread Insert STI Tap: Spiral Fute, 7/16"-20 UNF, H4 / 2B-3B, 3 Flute
The OSG Screw Thread Insert STI Tap is a spiral-flute tap for steel and stainless steel, model 0147508. It features a 7/16"-20 UNF thread, H4 / 2B-3B tolerance, 3 flutes, and a bottoming chamfer.
SKU 3G-OTH-244210
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, model 0147508. It features a 7/16"-20 UNF thread, H4 / 2B-3B tolerance, 3 flutes, and a bottoming chamfer.
Frequently Asked Questions
What is the OSG 0147508 STI tap used for?
The OSG 0147508 is a spiral-flute STI tap designed for cutting internal threads in steel and stainless steel. It is used to prepare holes for screw thread inserts, ensuring a precise H4 / 2B-3B fit. Common applications include automotive, aerospace, and general manufacturing where strong, wear-resistant threads are required.
What are the specifications of the OSG 0147508 STI tap?
The OSG 0147508 is a 7/16"-20 UNF spiral-flute STI tap with a bottoming chamfer and 3 flutes. It has an H4 / 2B-3B tolerance class, making it suitable for thread insert installation in steel and stainless steel. The manufacturer part number is 0147508, and it is designed for high-precision threading.
Where to buy the OSG 0147508 STI tap worldwide?
3G Electric supplies the OSG 0147508 STI tap worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we source and deliver this OSG tap to meet your production needs.
How to select the correct OSG STI tap for thread inserts?
To select the correct OSG STI tap, match the thread size (e.g., 7/16"-20 UNF) and tolerance class (H4 / 2B-3B) to your insert specifications. Choose a spiral-flute design for steel or stainless steel to improve chip evacuation. A bottoming chamfer allows threading to the bottom of blind holes. Always verify the tap's flute count and coating for your material.
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.
