OSG Spiral Flute Tap: 7/8"-9 UNC, H4 / 2B-3B, 4 Flute
The OSG Spiral Flute Tap (7/8"-9 UNC, MPN 1645078094) is a 4-flute, modified-bottoming-chamfer tap with H4 / 2B-3B tolerance, designed for threading steel and stainless steel. 3G Electric interprets your demand for…
SKU 3G-OTH-218980
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 Spiral Flute Tap (7/8"-9 UNC, MPN 1645078094) is a 4-flute, modified-bottoming-chamfer tap with H4 / 2B-3B tolerance, designed for threading steel and stainless steel. 3G Electric interprets your demand for this OEM-specified tool, sourcing it across our 14 industrial departments and backing it with specialist depth in controls and pumps.
Frequently Asked Questions
What is the OSG spiral flute tap 7/8"-9 UNC used for?
This OSG spiral flute tap is designed for threading blind holes in steel and stainless steel. Its modified bottoming chamfer and 4-flute design efficiently evacuate chips upward, making it ideal for high-production tapping in automotive, aerospace, and general manufacturing applications.
What are the specifications of the OSG 7/8"-9 UNC spiral flute tap?
The OSG tap has a 7/8"-9 UNC thread size, H4 / 2B-3B tolerance, 4 flutes, and a modified bottoming chamfer. It is designed for steel and stainless steel. The manufacturer part number is 1645078094. OSG is the OEM brand for this precision threading tool.
Where to buy OSG taps in worldwide?
3G Electric supplies and delivers OSG taps worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to ensure your order reaches any international destination. Contact us for availability and lead time on this OSG spiral flute tap.
How to select the right spiral flute tap for steel?
For steel, choose a spiral flute tap with a modified bottoming chamfer like this OSG 7/8"-9 UNC model. Ensure the tap has sufficient flute count (4 flutes) for chip evacuation and the correct tolerance (H4 / 2B-3B) for your thread class. Always match tap material to workpiece hardness.
Used in
Common applications for OSGOSG Products
3G Electric supplies OSG spiral-flute taps for steel & stainless steel. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
