OSG Spiral Flute Tap: 1/2"-20 UNF, H5 / 2B-3B, 3 Flute
The OSG Spiral Flute Tap (1/2"-20 UNF) is a spiral-flute tap for steel and stainless steel, featuring an H5 / 2B-3B tolerance with a modified bottoming chamfer and 3 flutes (MPN 1705001). 3G Electric interprets this…
SKU 3G-OTH-217872
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Product Description
The OSG Spiral Flute Tap (1/2"-20 UNF) is a spiral-flute tap for steel and stainless steel, featuring an H5 / 2B-3B tolerance with a modified bottoming chamfer and 3 flutes (MPN 1705001). 3G Electric interprets this demand and sources the genuine OSG tool, backed by specialist expertise across 14 industrial departments.
Frequently Asked Questions
What is the OSG spiral flute tap 1/2"-20 UNF used for?
This OSG spiral flute tap is designed for threading blind holes in steel and stainless steel. Its modified bottoming chamfer and 3-flute design efficiently evacuate chips upward, making it ideal for automotive, aerospace, and general manufacturing applications requiring precise internal threads.
What are the specifications of the OSG 1/2"-20 UNF spiral flute tap?
The OSG spiral flute tap has a 1/2"-20 UNF thread size, H5 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. It is designed for threading blind holes in steel and stainless steel, with manufacturer part number 1705001.
Where to buy OSG taps in worldwide?
3G Electric supplies OSG taps worldwide, including this 1/2"-20 UNF spiral flute tap. We handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time on this and other OSG threading tools.
How to select the right OSG tap for stainless steel?
For stainless steel, choose a spiral flute tap like this OSG 1/2"-20 UNF model with a modified bottoming chamfer. The 3-flute design aids chip evacuation in blind holes. Ensure the tap's H5 tolerance matches your required thread class (2B-3B) for proper fit.
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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.















