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, 3-flute design, and modified bottoming chamfer (MPN 1650503408). 3G Electric interprets…
SKU 3G-OTH-218892
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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, 3-flute design, and modified bottoming chamfer (MPN 1650503408). 3G Electric interprets this demand and sources the genuine OSG product, backed by specialist expertise across 14 industrial departments.
Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.
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 spiral flute design evacuates chips upward, preventing chip clogging and enabling efficient threading in deep or blind applications. It is commonly used in automotive, aerospace, and general manufacturing.
What are the specifications of the OSG spiral flute tap 1/2"-20 UNF?
This OSG tap has a thread size of 1/2"-20 UNF, a H5 tolerance for class 2B-3B fit, 3 flutes, and a modified bottoming chamfer. The manufacturer part number is 1650503408. It is designed for threading steel and stainless steel in blind hole applications.
Where to buy the OSG spiral flute tap 1/2"-20 UNF worldwide?
You can source this OSG spiral flute tap 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 item.
How to select the correct OSG spiral flute tap for steel?
Select an OSG spiral flute tap based on thread size, pitch, tolerance, and material. For steel and stainless steel blind holes, use a tap with a modified bottoming chamfer and H5 tolerance for precise fit. Ensure the tap matches the required thread class, such as 2B-3B for UNF threads.
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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.














