OSG Spiral Flute Tap: 1/4"-28 UNF, H4 / 2B-3B, 3 Flute, Bottoming Chamfer
The OSG Spiral Flute Tap (1/4"-28 UNF) is a bottoming-chamfer, 3-flute tap made from V-coated powdered metal, with an H4 / 2B-3B tolerance class (MPN 1650510808). Designed for threading steel and stainless steel, it…
SKU 3G-OTH-217818
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Product Description
The OSG Spiral Flute Tap (1/4"-28 UNF) is a bottoming-chamfer, 3-flute tap made from V-coated powdered metal, with an H4 / 2B-3B tolerance class (MPN 1650510808). Designed for threading steel and stainless steel, it is supplied by 3G Electric across 14 industrial departments, with specialist depth in cutting tools and machining.
Frequently Asked Questions
What is the OSG spiral flute tap 1/4-28 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 clogging in deep holes. The bottoming chamfer allows threading close to the bottom of a blind hole, making it ideal for automotive, aerospace, and general manufacturing applications.
What are the specifications of the OSG spiral flute tap 1/4-28 UNF?
This OSG tap has a thread size of 1/4-28 UNF, a H4 / 2B-3B tolerance, 3 flutes, and a bottoming chamfer. It features a V coating on powdered metal construction for enhanced wear resistance. The manufacturer part number is 1650510808. It is suitable for threading blind holes in steel and stainless steel.
Where to buy OSG spiral flute taps worldwide?
You can source OSG spiral flute taps worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time. We supply genuine OSG tooling for manufacturing and maintenance operations.
How to select the correct OSG spiral flute tap for a blind hole?
Select an OSG spiral flute tap with a bottoming chamfer for threading to the bottom of a blind hole. Ensure the thread size (e.g., 1/4-28 UNF) matches your application. The H4 / 2B-3B tolerance indicates the tap is ground for producing class 2B or 3B threads. Use a V-coated powdered metal tap for steel and stainless steel to improve 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.
