OSG Spiral Flute Tap: 7/16"-20 UNF, H3 / 2B-3B, 3 Flute
SKU 3G-OTH-218842
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Frequently Asked Questions
What is OSG spiral flute tap 0138408 used for?
The OSG spiral flute tap 0138408 is designed for threading blind holes in steel and stainless steel. Its spiral flute design lifts chips upward, preventing clogging and ensuring clean threads. It is commonly used in automotive, aerospace, and general machining applications where reliable thread quality is critical.
What are the specifications of OSG tap 0138408?
This OSG tap has a thread size of 7/16"-20 UNF, with a H3 / 2B-3B tolerance class. It features 3 flutes and a bottoming chamfer, making it suitable for threading to the bottom of blind holes. The manufacturer part number is 0138408.
Where to buy OSG spiral flute tap 0138408 worldwide?
3G Electric supplies the OSG spiral flute tap 0138408 to customers worldwide. We handle full logistics, customs clearance, and delivery to your location. Contact us for pricing and lead time; we source genuine OSG cutting tools for industrial applications globally.
How to select the right OSG tap for steel?
For threading steel, choose a spiral flute tap like the OSG 0138408 when tapping blind holes, as it evacuates chips upward. Ensure the thread size (7/16"-20 UNF) and tolerance (H3 / 2B-3B) match your application. Use appropriate cutting fluid and speed for steel to extend tool life.
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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.















