OSG Spiral Flute Tap: 1/4"-28 UNF, H4 / 2B-3B, 2 Flute
The OSG Spiral Flute Tap (1/4"-28 UNF) is a spiral-flute tap for steel and stainless steel, featuring an H4 / 2B-3B tolerance, 2 flutes, and a modified bottoming chamfer (MPN 1645014284). 3G Electric interprets this…
SKU 3G-OTH-219041
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Product Description
The OSG Spiral Flute Tap (1/4"-28 UNF) is a spiral-flute tap for steel and stainless steel, featuring an H4 / 2B-3B tolerance, 2 flutes, and a modified bottoming chamfer (MPN 1645014284). 3G Electric interprets this demand and sources the genuine OSG product, supporting procurement across 14 industrial departments with specialist depth in combustion, pumps, and controls.
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 modified bottoming chamfer and 2-flute design efficiently evacuate chips upward, making it ideal for CNC and manual tapping applications where chip clearance is critical.
What are the specifications of the OSG 1/4-28 UNF spiral flute tap?
The tap has a 1/4-28 UNF thread size, H4 / 2B-3B tolerance class, 2 flutes, and a modified bottoming chamfer. The manufacturer part number is 1645014284. It is designed for threading steel and stainless steel, with a spiral flute geometry for chip evacuation in blind holes.
Where to buy OSG taps in worldwide?
3G Electric supplies OSG taps worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us to source the OSG spiral flute tap 1/4-28 UNF (MPN 1645014284) and other threading tools for your operations.
How to select the correct OSG tap for stainless steel?
For stainless steel, choose a spiral flute tap with a modified bottoming chamfer, like this OSG model, to manage chip evacuation in blind holes. Ensure the thread size (1/4-28 UNF) and tolerance class (H4 / 2B-3B) match your application. Consult OSG's technical data for material-specific speeds and feeds.
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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.
