OSG Spiral Flute Tap: 5/16"-18 UNC, 2B, 3 Flute, Bottoming Chamfer
The OSG Spiral Flute Tap (5/16"-18 UNC, MPN 2985800) is a general-purpose tap with a 2B thread class, bottoming chamfer, and 3-flute design in high-speed steel. 3G Electric sources this precision threading tool as…
SKU 3G-OTH-230838
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Product Description
The OSG Spiral Flute Tap (5/16"-18 UNC, MPN 2985800) is a general-purpose tap with a 2B thread class, bottoming chamfer, and 3-flute design in high-speed steel. 3G Electric sources this precision threading tool as part of our industrial supply across 14 departments, with specialist expertise in combustion, pumps, and controls.
Frequently Asked Questions
What is the OSG spiral flute tap 2985800 used for?
The OSG spiral flute tap 2985800 is designed for threading blind holes in materials like steel and aluminum. Its spiral flute design lifts chips upward, preventing clogging and ensuring clean threads. It is commonly used in automotive, aerospace, and general manufacturing applications.
What are the specifications of the OSG spiral flute tap 2985800?
The OSG spiral flute tap 2985800 has a thread size of 5/16"-18 UNC, a 2B class fit, 3 flutes, and a bottoming chamfer. It is made from high-speed steel (HSS) and is suitable for threading blind holes. The manufacturer part number is 2985800.
Where to buy the OSG spiral flute tap 2985800 worldwide?
You can source the OSG spiral flute tap 2985800 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 spiral flute tap for blind holes?
For blind holes, choose a spiral flute tap with a bottoming chamfer, like the OSG 2985800. Ensure the thread size (5/16"-18 UNC) and class fit (2B) match your application. Use high-speed steel for general materials; consult OSG's technical data for specific material recommendations.
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3G Electric supplies OSG general purpose spiral-flute taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.














