OSG Spiral Flute Tap: 5/8"-18 UNF, H5 / 2B-3B, 4 Flute, Bottoming Chamfer (MPN 0139508)
SKU 3G-OTH-219017
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Frequently Asked Questions
What is the OSG spiral flute tap 0139508 used for?
The OSG spiral flute tap 0139508 is designed for threading blind holes in steel and stainless steel. Its spiral flute design evacuates chips upward, preventing clogging and ensuring clean threads. It is commonly used in automotive, aerospace, and general manufacturing applications requiring precise UNF threads.
What are the specifications of the OSG spiral flute tap 0139508?
The OSG spiral flute tap 0139508 has a thread size of 5/8"-18 UNF, with an H5 tolerance class for 2B-3B fit. It features 4 flutes and a bottoming chamfer for threading to the bottom of blind holes. The manufacturer part number is 0139508.
Where to buy the OSG spiral flute tap 0139508 worldwide?
You can source the OSG spiral flute tap 0139508 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 on this precision threading tool.
How to select the correct OSG spiral flute tap for steel?
For threading steel, select a spiral flute tap with a bottoming chamfer for blind holes. The OSG 0139508 is suitable for 5/8"-18 UNF threads in steel and stainless steel. Ensure the tap's H5 tolerance matches your required thread class (2B-3B). Use appropriate cutting fluid and speed for material hardness.
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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.















